629431492840 has 64 divisors (see below), whose sum is σ = 1424128424400. Its totient is φ = 250368104448.

The previous prime is 629431492771. The next prime is 629431492889. The reversal of 629431492840 is 48294134926.

It can be written as a sum of positive squares in 8 ways, for example, as 569532846276 + 59898646564 = 754674^2 + 244742^2 .

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, 16442202 + ... + 16480438.

Almost surely, 2^629431492840 is an apocalyptic number.

It is an amenable number.

629431492840 is an abundant number, since it is smaller than the sum of its proper divisors (794696931560).

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

629431492840 is a wasteful number, since it uses less digits than its factorization.

629431492840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40534 (or 40530 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 52.

The spelling of 629431492840 in words is "six hundred twenty-nine billion, four hundred thirty-one million, four hundred ninety-two thousand, eight hundred forty".