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87751130130860 = 2257701894142349
BaseRepresentation
bin10011111100111100100110…
…111100001010100110101100
3102111200221000010200011110112
4103330330212330022212230
543000203303303141420
6510344151311355152
724324544544135150
oct2374744674124654
9374627003604415
1087751130130860
1125a62055323179
129a1290bb22ab8
1339c6b85867881
14179526a965060
15a2291cdbd8c5
hex4fcf26f0a9ac

87751130130860 has 48 divisors (see below), whose sum is σ = 210903144379200. Its totient is φ = 30043182892800.

The previous prime is 87751130130841. The next prime is 87751130130869. The reversal of 87751130130860 is 6803103115778.

It is a junction number, because it is equal to n+sod(n) for n = 87751130130799 and 87751130130808.

It is not an unprimeable number, because it can be changed into a prime (87751130130869) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 446973035 + ... + 447169314.

It is an arithmetic number, because the mean of its divisors is an integer number (4393815507900).

Almost surely, 287751130130860 is an apocalyptic number.

It is an amenable number.

87751130130860 is an abundant number, since it is smaller than the sum of its proper divisors (123152014248340).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87751130130860 is a wasteful number, since it uses less digits than its factorization.

87751130130860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 894143066 (or 894143064 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 50.

The spelling of 87751130130860 in words is "eighty-seven trillion, seven hundred fifty-one billion, one hundred thirty million, one hundred thirty thousand, eight hundred sixty".

Divisors: 1 2 4 5 7 10 14 20 28 35 70 140 701 1402 2804 3505 4907 7010 9814 14020 19628 24535 49070 98140 894142349 1788284698 3576569396 4470711745 6258996443 8941423490 12517992886 17882846980 25035985772 31294982215 62589964430 125179928860 626793786649 1253587573298 2507175146596 3133968933245 4387556506543 6267937866490 8775113013086 12535875732980 17550226026172 21937782532715 43875565065430 87751130130860