621655041004 has 12 divisors (see below), whose sum is σ = 1087929196200. Its totient is φ = 310818127808.

The previous prime is 621655040987. The next prime is 621655041023. The reversal of 621655041004 is 400140556126.

621655041004 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2198194 + ... + 2464825.

It is an arithmetic number, because the mean of its divisors is an integer number (90660766350).

Almost surely, 2^621655041004 is an apocalyptic number.

It is an amenable number.

621655041004 is a deficient number, since it is larger than the sum of its proper divisors (466274155196).

621655041004 is a wasteful number, since it uses less digits than its factorization.

621655041004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4696352 (or 4696350 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 34.

The spelling of 621655041004 in words is "six hundred twenty-one billion, six hundred fifty-five million, forty-one thousand, four".