629555940864 has 120 divisors (see below), whose sum is σ = 1818072776520. Its totient is φ = 209721274368.

The previous prime is 629555940833. The next prime is 629555940883. The reversal of 629555940864 is 468049555926.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7501567 + ... + 7585025.

It is an arithmetic number, because the mean of its divisors is an integer number (15150606471).

Almost surely, 2^629555940864 is an apocalyptic number.

629555940864 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 629555940864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (909036388260).

629555940864 is an abundant number, since it is smaller than the sum of its proper divisors (1188516835656).

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

629555940864 is a wasteful number, since it uses less digits than its factorization.

629555940864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85120 (or 85101 counting only the distinct ones).

The product of its (nonzero) digits is 93312000, while the sum is 63.

The spelling of 629555940864 in words is "six hundred twenty-nine billion, five hundred fifty-five million, nine hundred forty thousand, eight hundred sixty-four".