621407056005 has 24 divisors (see below), whose sum is σ = 1077177160800. Its totient is φ = 331395066720.

The previous prime is 621407055977. The next prime is 621407056027. The reversal of 621407056005 is 500650704126.

It is a happy number.

621407056005 is a `hidden beast` number, since 6 + 2 + 1 + 40 + 7 + 0 + 5 + 600 + 5 = 666.

It is not a de Polignac number, because 621407056005 - 2¹⁰ = 621407054981 is a prime.

It is a super-2 number, since 2×621407056005² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 237150 + ... + 1139760.

It is an arithmetic number, because the mean of its divisors is an integer number (44882381700).

Almost surely, 2^621407056005 is an apocalyptic number.

It is an amenable number.

621407056005 is a deficient number, since it is larger than the sum of its proper divisors (455770104795).

621407056005 is a wasteful number, since it uses less digits than its factorization.

621407056005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 917921 (or 917918 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The spelling of 621407056005 in words is "six hundred twenty-one billion, four hundred seven million, fifty-six thousand, five".