21924557490770 has 64 divisors (see below), whose sum is σ = 43366356633600. Its totient is φ = 7914338573760.

The previous prime is 21924557490769. The next prime is 21924557490791. The reversal of 21924557490770 is 7709475542912.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 147917837 + ... + 148065983.

It is an arithmetic number, because the mean of its divisors is an integer number (677599322400).

Almost surely, 2^{21924557490770} is an apocalyptic number.

21924557490770 is a deficient number, since it is larger than the sum of its proper divisors (21441799142830).

21924557490770 is a wasteful number, since it uses less digits than its factorization.

21924557490770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157983.

The product of its (nonzero) digits is 44452800, while the sum is 62.

The spelling of 21924557490770 in words is "twenty-one trillion, nine hundred twenty-four billion, five hundred fifty-seven million, four hundred ninety thousand, seven hundred seventy".