636040256626 has 16 divisors (see below), whose sum is σ = 965792024064. Its totient is φ = 314111462544.

The previous prime is 636040256611. The next prime is 636040256651. The reversal of 636040256626 is 626652040636.

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, 211375 + ... + 1147501.

It is an arithmetic number, because the mean of its divisors is an integer number (60362001504).

Almost surely, 2^636040256626 is an apocalyptic number.

636040256626 is a deficient number, since it is larger than the sum of its proper divisors (329751767438).

636040256626 is a wasteful number, since it uses less digits than its factorization.

636040256626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 940305.

The product of its (nonzero) digits is 1866240, while the sum is 46.

The spelling of 636040256626 in words is "six hundred thirty-six billion, forty million, two hundred fifty-six thousand, six hundred twenty-six".