621139934822 has 16 divisors (see below), whose sum is σ = 1043881366032. Its totient is φ = 274705621920.

The previous prime is 621139934729. The next prime is 621139934843. The reversal of 621139934822 is 228439931126.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 381534773 + ... + 381536400.

It is an arithmetic number, because the mean of its divisors is an integer number (65242585377).

Almost surely, 2^621139934822 is an apocalyptic number.

621139934822 is a deficient number, since it is larger than the sum of its proper divisors (422741431210).

621139934822 is a wasteful number, since it uses less digits than its factorization.

621139934822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 763071223.

The product of its digits is 1119744, while the sum is 50.

The spelling of 621139934822 in words is "six hundred twenty-one billion, one hundred thirty-nine million, nine hundred thirty-four thousand, eight hundred twenty-two".