21753822357804 has 24 divisors (see below), whose sum is σ = 50759914348528. Its totient is φ = 7251131903040.

The previous prime is 21753822357803. The next prime is 21753822357871. The reversal of 21753822357804 is 40875322835712.

It is not an unprimeable number, because it can be changed into a prime (21753822357803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17138767 + ... + 18364230.

Almost surely, 2^{21753822357804} is an apocalyptic number.

It is an amenable number.

21753822357804 is an abundant number, since it is smaller than the sum of its proper divisors (29006091990724).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21753822357804 is a wasteful number, since it uses less digits than its factorization.

21753822357804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35554065 (or 35554063 counting only the distinct ones).

The product of its (nonzero) digits is 22579200, while the sum is 57.

The spelling of 21753822357804 in words is "twenty-one trillion, seven hundred fifty-three billion, eight hundred twenty-two million, three hundred fifty-seven thousand, eight hundred four".