87899320385 has 16 divisors (see below), whose sum is σ = 107067030336. Its totient is φ = 69261158208.

The previous prime is 87899320381. The next prime is 87899320393. The reversal of 87899320385 is 58302399878.

It is a cyclic number.

It is not a de Polignac number, because 87899320385 - 2² = 87899320381 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87899320381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4359347 + ... + 4379463.

It is an arithmetic number, because the mean of its divisors is an integer number (6691689396).

Almost surely, 2^87899320385 is an apocalyptic number.

It is an amenable number.

87899320385 is a deficient number, since it is larger than the sum of its proper divisors (19167709951).

87899320385 is a wasteful number, since it uses less digits than its factorization.

87899320385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33232.

The product of its (nonzero) digits is 26127360, while the sum is 62.

The spelling of 87899320385 in words is "eighty-seven billion, eight hundred ninety-nine million, three hundred twenty thousand, three hundred eighty-five".