629663056420440 has 512 divisors, whose sum is σ = 2226386972160000. Its totient is φ = 142391322759168.

The previous prime is 629663056420439. The next prime is 629663056420469. The reversal of 629663056420440 is 44024650366926.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 4531934652 + ... + 4532073588.

It is an arithmetic number, because the mean of its divisors is an integer number (4348412055000).

Almost surely, 2^{629663056420440} is an apocalyptic number.

629663056420440 is a gapful number since it is divisible by the number (60) 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 629663056420440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1113193486080000).

629663056420440 is an abundant number, since it is smaller than the sum of its proper divisors (1596723915739560).

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

629663056420440 is a wasteful number, since it uses less digits than its factorization.

629663056420440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140144 (or 140126 counting only the distinct ones).

The product of its (nonzero) digits is 44789760, while the sum is 57.

The spelling of 629663056420440 in words is "six hundred twenty-nine trillion, six hundred sixty-three billion, fifty-six million, four hundred twenty thousand, four hundred forty".