87913087913 has 32 divisors (see below), whose sum is σ = 106979623680. Its totient is φ = 70567200000.

The previous prime is 87913087907. The next prime is 87913087949. The reversal of 87913087913 is 31978031978.

It is a cyclic number.

It is not a de Polignac number, because 87913087913 - 2⁴ = 87913087897 is a prime.

It is a super-3 number, since 3×87913087913³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87913087963) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8874263 + ... + 8884163.

It is an arithmetic number, because the mean of its divisors is an integer number (3343113240).

Almost surely, 2^87913087913 is an apocalyptic number.

It is an amenable number.

87913087913 is a deficient number, since it is larger than the sum of its proper divisors (19066535767).

87913087913 is a wasteful number, since it uses less digits than its factorization.

87913087913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10689.

The product of its (nonzero) digits is 2286144, while the sum is 56.

The spelling of 87913087913 in words is "eighty-seven billion, nine hundred thirteen million, eighty-seven thousand, nine hundred thirteen".