87051617834556 has 48 divisors (see below), whose sum is σ = 204888486515328. Its totient is φ = 28765098897600.

The previous prime is 87051617834539. The next prime is 87051617834579. The reversal of 87051617834556 is 65543871615078.

It is a super-2 number, since 2×87051617834556² (a number of 29 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (66) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27944950 + ... + 30903453.

It is an arithmetic number, because the mean of its divisors is an integer number (4268510135736).

Almost surely, 2^{87051617834556} is an apocalyptic number.

It is an amenable number.

87051617834556 is an abundant number, since it is smaller than the sum of its proper divisors (117836868680772).

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

87051617834556 is a wasteful number, since it uses less digits than its factorization.

87051617834556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58849482 (or 58849480 counting only the distinct ones).

The product of its (nonzero) digits is 169344000, while the sum is 66.

The spelling of 87051617834556 in words is "eighty-seven trillion, fifty-one billion, six hundred seventeen million, eight hundred thirty-four thousand, five hundred fifty-six".