22646639633487 has 16 divisors (see below), whose sum is σ = 30496931464320. Its totient is φ = 14947077764000.

The previous prime is 22646639633473. The next prime is 22646639633521. The reversal of 22646639633487 is 78433693664622.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22646639633487 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22646639631487) 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, 792964 + ... + 6776582.

It is an arithmetic number, because the mean of its divisors is an integer number (1906058216520).

Almost surely, 2^{22646639633487} is an apocalyptic number.

22646639633487 is a deficient number, since it is larger than the sum of its proper divisors (7850291830833).

22646639633487 is a wasteful number, since it uses less digits than its factorization.

22646639633487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5996214.

The product of its digits is 1128701952, while the sum is 69.

The spelling of 22646639633487 in words is "twenty-two trillion, six hundred forty-six billion, six hundred thirty-nine million, six hundred thirty-three thousand, four hundred eighty-seven".