87388977056 has 24 divisors (see below), whose sum is σ = 176048145504. Its totient is φ = 42678336960.

The previous prime is 87388976989. The next prime is 87388977059. The reversal of 87388977056 is 65077988378.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (87388977059) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31753340 + ... + 31756091.

It is an arithmetic number, because the mean of its divisors is an integer number (7335339396).

Almost surely, 2^87388977056 is an apocalyptic number.

87388977056 is a gapful number since it is divisible by the number (86) formed by its first and last digit.

It is an amenable number.

87388977056 is an abundant number, since it is smaller than the sum of its proper divisors (88659168448).

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

87388977056 is a wasteful number, since it uses less digits than its factorization.

87388977056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63509484 (or 63509476 counting only the distinct ones).

The product of its (nonzero) digits is 142248960, while the sum is 68.

The spelling of 87388977056 in words is "eighty-seven billion, three hundred eighty-eight million, nine hundred seventy-seven thousand, fifty-six".