621979831203 has 16 divisors (see below), whose sum is σ = 830565025536. Its totient is φ = 414024236640.

The previous prime is 621979831127. The next prime is 621979831247. The reversal of 621979831203 is 302138979126.

It is not a de Polignac number, because 621979831203 - 2¹⁷ = 621979700131 is a prime.

It is not an unprimeable number, because it can be changed into a prime (621979831903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8523693 + ... + 8596353.

It is an arithmetic number, because the mean of its divisors is an integer number (51910314096).

Almost surely, 2^621979831203 is an apocalyptic number.

621979831203 is a deficient number, since it is larger than the sum of its proper divisors (208585194333).

621979831203 is a wasteful number, since it uses less digits than its factorization.

621979831203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76954.

The product of its (nonzero) digits is 979776, while the sum is 51.

The spelling of 621979831203 in words is "six hundred twenty-one billion, nine hundred seventy-nine million, eight hundred thirty-one thousand, two hundred three".