87656265920 has 56 divisors (see below), whose sum is σ = 219717366000. Its totient is φ = 33217108992.

The previous prime is 87656265889. The next prime is 87656265923. The reversal of 87656265920 is 2956265678.

It is not an unprimeable number, because it can be changed into a prime (87656265923) 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, 7202495 + ... + 7214654.

Almost surely, 2^87656265920 is an apocalyptic number.

87656265920 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

87656265920 is an abundant number, since it is smaller than the sum of its proper divisors (132061100080).

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

87656265920 is a wasteful number, since it uses less digits than its factorization.

87656265920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14417185 (or 14417175 counting only the distinct ones).

The product of its (nonzero) digits is 10886400, while the sum is 56.

The spelling of 87656265920 in words is "eighty-seven billion, six hundred fifty-six million, two hundred sixty-five thousand, nine hundred twenty".