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87121401704 = 2373922136659
BaseRepresentation
bin101000100100011010…
…1110001011101101000
322022212122021202121122
41101020311301131220
52411411034323304
6104004545554412
76202643460461
oct1211065613550
9268778252548
1087121401704
1133a4783a637
1214a74945a08
1382a563598c
144306897d68
1523ed7b89be
hex1448d71768

87121401704 has 32 divisors (see below), whose sum is σ = 163672164000. Its totient is φ = 43475568192.

The previous prime is 87121401683. The next prime is 87121401709. The reversal of 87121401704 is 40710412178.

It is not an unprimeable number, because it can be changed into a prime (87121401709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13079927 + ... + 13086585.

It is an arithmetic number, because the mean of its divisors is an integer number (5114755125).

Almost surely, 287121401704 is an apocalyptic number.

It is an amenable number.

87121401704 is a deficient number, since it is larger than the sum of its proper divisors (76550762296).

87121401704 is a wasteful number, since it uses less digits than its factorization.

87121401704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9617 (or 9613 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 35.

The spelling of 87121401704 in words is "eighty-seven billion, one hundred twenty-one million, four hundred one thousand, seven hundred four".

Divisors: 1 2 4 8 739 1478 2213 2956 4426 5912 6659 8852 13318 17704 26636 53272 1635407 3270814 4921001 6541628 9842002 13083256 14736367 19684004 29472734 39368008 58945468 117890936 10890175213 21780350426 43560700852 87121401704