87642818238788 has 24 divisors (see below), whose sum is σ = 153937726646592. Its totient is φ = 43660629320544.

The previous prime is 87642818238761. The next prime is 87642818238799. The reversal of 87642818238788 is 88783281824678.

It is a Smith number, since the sum of its digits (80) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16493345 + ... + 21149847.

It is an arithmetic number, because the mean of its divisors is an integer number (6414071943608).

Almost surely, 2^{87642818238788} is an apocalyptic number.

It is an amenable number.

87642818238788 is a deficient number, since it is larger than the sum of its proper divisors (66294908407804).

87642818238788 is a wasteful number, since it uses less digits than its factorization.

87642818238788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4673771 (or 4673769 counting only the distinct ones).

The product of its digits is 3699376128, while the sum is 80.

The spelling of 87642818238788 in words is "eighty-seven trillion, six hundred forty-two billion, eight hundred eighteen million, two hundred thirty-eight thousand, seven hundred eighty-eight".