87297986140032 has 256 divisors, whose sum is σ = 257008955443200. Its totient is φ = 26114184019968.

The previous prime is 87297986139997. The next prime is 87297986140051. The reversal of 87297986140032 is 23004168979278.

It is a super-2 number, since 2×87297986140032² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 46678569 + ... + 48512727.

It is an arithmetic number, because the mean of its divisors is an integer number (1003941232200).

Almost surely, 2^{87297986140032} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87297986140032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128504477721600).

87297986140032 is an abundant number, since it is smaller than the sum of its proper divisors (169710969303168).

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

87297986140032 is a wasteful number, since it uses less digits than its factorization.

87297986140032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1834533 (or 1834521 counting only the distinct ones).

The product of its (nonzero) digits is 73156608, while the sum is 66.

The spelling of 87297986140032 in words is "eighty-seven trillion, two hundred ninety-seven billion, nine hundred eighty-six million, one hundred forty thousand, thirty-two".