629444055421440 has 960 divisors, whose sum is σ = 2548909875612672. Its totient is φ = 140572164096000.

The previous prime is 629444055421409. The next prime is 629444055421463. The reversal of 629444055421440 is 44124550444926.

629444055421440 is a `hidden beast` number, since 6 + 2 + 9 + 4 + 4 + 40 + 5 + 542 + 14 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (960).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2059876665 + ... + 2060182215.

Almost surely, 2^{629444055421440} is an apocalyptic number.

629444055421440 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 629444055421440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1274454937806336).

629444055421440 is an abundant number, since it is smaller than the sum of its proper divisors (1919465820191232).

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

629444055421440 is a wasteful number, since it uses less digits than its factorization.

629444055421440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305881 (or 305862 counting only the distinct ones).

The product of its (nonzero) digits is 22118400, while the sum is 54.

The spelling of 629444055421440 in words is "six hundred twenty-nine trillion, four hundred forty-four billion, fifty-five million, four hundred twenty-one thousand, four hundred forty".