87111670512 has 40 divisors (see below), whose sum is σ = 226169353600. Its totient is φ = 28891304640.

The previous prime is 87111670511. The next prime is 87111670571. The reversal of 87111670512 is 21507611178.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87111670511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4550314 + ... + 4569417.

It is an arithmetic number, because the mean of its divisors is an integer number (5654233840).

Almost surely, 2^87111670512 is an apocalyptic number.

It is an amenable number.

87111670512 is an abundant number, since it is smaller than the sum of its proper divisors (139057683088).

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

87111670512 is a wasteful number, since it uses less digits than its factorization.

87111670512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9119941 (or 9119935 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 39.

The spelling of 87111670512 in words is "eighty-seven billion, one hundred eleven million, six hundred seventy thousand, five hundred twelve".