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87030013381287 = 369186117487507
BaseRepresentation
bin10011110010011101000001…
…000010000100101010100111
3102102010222200021021202001120
4103302131001002010222213
542401344431411200122
6505033011453025023
724221465601661104
oct2362350102045247
9372128607252046
1087030013381287
1125804248760029
129916bbb485173
133973b83559552
14176c3bcd19aab
15a0dcb500675c
hex4f2741084aa7

87030013381287 has 16 divisors (see below), whose sum is σ = 116209536196992. Its totient is φ = 57935252040480.

The previous prime is 87030013381163. The next prime is 87030013381379. The reversal of 87030013381287 is 78218331003078.

It is a de Polignac number, because none of the positive numbers 2k-87030013381287 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87030013382287) 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, 178276788 + ... + 178764294.

It is an arithmetic number, because the mean of its divisors is an integer number (7263096012312).

Almost surely, 287030013381287 is an apocalyptic number.

87030013381287 is a deficient number, since it is larger than the sum of its proper divisors (29179522815705).

87030013381287 is a wasteful number, since it uses less digits than its factorization.

87030013381287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 574318.

The product of its (nonzero) digits is 1354752, while the sum is 51.

The spelling of 87030013381287 in words is "eighty-seven trillion, thirty billion, thirteen million, three hundred eighty-one thousand, two hundred eighty-seven".

Divisors: 1 3 691 2073 86117 258351 487507 1462521 59506847 178520541 336867337 1010602011 41982640319 125947920957 29010004460429 87030013381287