6646256000635 has 16 divisors (see below), whose sum is σ = 8065686309120. Its totient is φ = 5256893790720.

The previous prime is 6646256000509. The next prime is 6646256000641. The reversal of 6646256000635 is 5360006526466.

It is not a de Polignac number, because 6646256000635 - 2¹⁷ = 6646255869563 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5904319 + ... + 6939271.

It is an arithmetic number, because the mean of its divisors is an integer number (504105394320).

Almost surely, 2^{6646256000635} is an apocalyptic number.

6646256000635 is a deficient number, since it is larger than the sum of its proper divisors (1419430308485).

6646256000635 is a wasteful number, since it uses less digits than its factorization.

6646256000635 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1049478.

The product of its (nonzero) digits is 4665600, while the sum is 49.

The spelling of 6646256000635 in words is "six trillion, six hundred forty-six billion, two hundred fifty-six million, six hundred thirty-five", and thus it is an aban number.