87636622663677 has 32 divisors (see below), whose sum is σ = 122719483772928. Its totient is φ = 55523012726016.

The previous prime is 87636622663669. The next prime is 87636622663687. The reversal of 87636622663677 is 77636622663678.

It is not a de Polignac number, because 87636622663677 - 2³ = 87636622663669 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 87636622663599 and 87636622663608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87636622663637) 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, 2078133 + ... + 13401189.

It is an arithmetic number, because the mean of its divisors is an integer number (3834983867904).

Almost surely, 2^{87636622663677} is an apocalyptic number.

It is an amenable number.

87636622663677 is a deficient number, since it is larger than the sum of its proper divisors (35082861109251).

87636622663677 is a wasteful number, since it uses less digits than its factorization.

87636622663677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11323809.

The product of its digits is 4608866304, while the sum is 75.

Subtracting from 87636622663677 its reverse (77636622663678), we obtain a palindrome (9999999999999).

The spelling of 87636622663677 in words is "eighty-seven trillion, six hundred thirty-six billion, six hundred twenty-two million, six hundred sixty-three thousand, six hundred seventy-seven".