626445631642404 has 288 divisors, whose sum is σ = 1778083161394176. Its totient is φ = 170835864756480.

The previous prime is 626445631642349. The next prime is 626445631642417. The reversal of 626445631642404 is 404246136544626.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 23123740899 + ... + 23123767989.

It is an arithmetic number, because the mean of its divisors is an integer number (6173899865952).

Almost surely, 2^{626445631642404} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 626445631642404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (889041580697088).

626445631642404 is an abundant number, since it is smaller than the sum of its proper divisors (1151637529751772).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

626445631642404 is a wasteful number, since it uses less digits than its factorization.

626445631642404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30735 (or 30726 counting only the distinct ones).

The product of its (nonzero) digits is 79626240, while the sum is 57.

The spelling of 626445631642404 in words is "six hundred twenty-six trillion, four hundred forty-five billion, six hundred thirty-one million, six hundred forty-two thousand, four hundred four".