722621031345 has 24 divisors (see below), whose sum is σ = 1253340533952. Its totient is φ = 385152525600.

The previous prime is 722621031337. The next prime is 722621031389. The reversal of 722621031345 is 543130126227.

722621031345 is a `hidden beast` number, since 7 + 22 + 621 + 0 + 3 + 1 + 3 + 4 + 5 = 666.

It is not a de Polignac number, because 722621031345 - 2³ = 722621031337 is a prime.

It is a super-2 number, since 2×722621031345² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5040141 + ... + 5181530.

It is an arithmetic number, because the mean of its divisors is an integer number (52222522248).

Almost surely, 2^722621031345 is an apocalyptic number.

It is an amenable number.

722621031345 is a deficient number, since it is larger than the sum of its proper divisors (530719502607).

722621031345 is a wasteful number, since it uses less digits than its factorization.

722621031345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10223253 (or 10223250 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The spelling of 722621031345 in words is "seven hundred twenty-two billion, six hundred twenty-one million, thirty-one thousand, three hundred forty-five".