626834931380 has 72 divisors (see below), whose sum is σ = 1535087775816. Its totient is φ = 214378752000.

The previous prime is 626834931353. The next prime is 626834931427. The reversal of 626834931380 is 83139438626.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 431141944996 + 195692986384 = 656614^2 + 442372^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 404561 + ... + 1190520.

It is an arithmetic number, because the mean of its divisors is an integer number (21320663553).

Almost surely, 2^626834931380 is an apocalyptic number.

It is an amenable number.

626834931380 is an abundant number, since it is smaller than the sum of its proper divisors (908252844436).

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

626834931380 is a wasteful number, since it uses less digits than its factorization.

626834931380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1595505 (or 1595496 counting only the distinct ones).

The product of its (nonzero) digits is 4478976, while the sum is 53.

The spelling of 626834931380 in words is "six hundred twenty-six billion, eight hundred thirty-four million, nine hundred thirty-one thousand, three hundred eighty".