21777058304 has 40 divisors (see below), whose sum is σ = 43530368640. Its totient is φ = 10883828736.

The previous prime is 21777058267. The next prime is 21777058319. The reversal of 21777058304 is 40385077712.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1384307 + ... + 1399949.

It is an arithmetic number, because the mean of its divisors is an integer number (1088259216).

Almost surely, 2^21777058304 is an apocalyptic number.

It is an amenable number.

21777058304 is a deficient number, since it is larger than the sum of its proper divisors (21753310336).

21777058304 is an equidigital number, since it uses as much as digits as its factorization.

21777058304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18380 (or 18364 counting only the distinct ones).

The product of its (nonzero) digits is 329280, while the sum is 44.

The spelling of 21777058304 in words is "twenty-one billion, seven hundred seventy-seven million, fifty-eight thousand, three hundred four".