626644624040 has 32 divisors (see below), whose sum is σ = 1417035600000. Its totient is φ = 249398259264.

The previous prime is 626644624037. The next prime is 626644624043. The reversal of 626644624040 is 40426446626.

It is an interprime number because it is at equal distance from previous prime (626644624037) and next prime (626644624043).

It is a junction number, because it is equal to n+sod(n) for n = 626644623982 and 626644624000.

It is not an unprimeable number, because it can be changed into a prime (626644624043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39354140 + ... + 39370059.

It is an arithmetic number, because the mean of its divisors is an integer number (44282362500).

Almost surely, 2^626644624040 is an apocalyptic number.

It is an amenable number.

626644624040 is an abundant number, since it is smaller than the sum of its proper divisors (790390975960).

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

626644624040 is a wasteful number, since it uses less digits than its factorization.

626644624040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78724409 (or 78724405 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 44.

The spelling of 626644624040 in words is "six hundred twenty-six billion, six hundred forty-four million, six hundred twenty-four thousand, forty".