621430045056 has 48 divisors (see below), whose sum is σ = 1788229690260. Its totient is φ = 207143347968.

The previous prime is 621430045003. The next prime is 621430045079. The reversal of 621430045056 is 650540034126.

621430045056 is a `hidden beast` number, since 6 + 2 + 143 + 0 + 0 + 4 + 505 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 621430045056.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 269716750 + ... + 269719053.

Almost surely, 2^621430045056 is an apocalyptic number.

It is an amenable number.

621430045056 is an abundant number, since it is smaller than the sum of its proper divisors (1166799645204).

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

621430045056 is a wasteful number, since it uses less digits than its factorization.

621430045056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539435823 (or 539435808 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The spelling of 621430045056 in words is "six hundred twenty-one billion, four hundred thirty million, forty-five thousand, fifty-six".