621960656141 has 16 divisors (see below), whose sum is σ = 695088995328. Its totient is φ = 551598220800.

The previous prime is 621960656137. The next prime is 621960656173. The reversal of 621960656141 is 141656069126.

It is not a de Polignac number, because 621960656141 - 2² = 621960656137 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621960650141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15140756 + ... + 15181778.

It is an arithmetic number, because the mean of its divisors is an integer number (43443062208).

Almost surely, 2^621960656141 is an apocalyptic number.

It is an amenable number.

621960656141 is a deficient number, since it is larger than the sum of its proper divisors (73128339187).

621960656141 is a wasteful number, since it uses less digits than its factorization.

621960656141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74692.

The product of its (nonzero) digits is 466560, while the sum is 47.

The spelling of 621960656141 in words is "six hundred twenty-one billion, nine hundred sixty million, six hundred fifty-six thousand, one hundred forty-one".