21753116474 has 16 divisors (see below), whose sum is σ = 33055046016. Its totient is φ = 10735686000.

The previous prime is 21753116461. The next prime is 21753116521. The reversal of 21753116474 is 47461135712.

It is a Curzon 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, 181982 + ... + 276809.

It is an arithmetic number, because the mean of its divisors is an integer number (2065940376).

Almost surely, 2^21753116474 is an apocalyptic number.

21753116474 is a deficient number, since it is larger than the sum of its proper divisors (11301929542).

21753116474 is a wasteful number, since it uses less digits than its factorization.

21753116474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459101.

The product of its digits is 141120, while the sum is 41.

The spelling of 21753116474 in words is "twenty-one billion, seven hundred fifty-three million, one hundred sixteen thousand, four hundred seventy-four".