21883578374 has 32 divisors (see below), whose sum is σ = 38463114816. Its totient is φ = 9141972480.

The previous prime is 21883578371. The next prime is 21883578401. The reversal of 21883578374 is 47387538812.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21883578371) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 668804 + ... + 700760.

It is an arithmetic number, because the mean of its divisors is an integer number (1201972338).

Almost surely, 2^21883578374 is an apocalyptic number.

21883578374 is a deficient number, since it is larger than the sum of its proper divisors (16579536442).

21883578374 is a wasteful number, since it uses less digits than its factorization.

21883578374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33200.

The product of its digits is 9031680, while the sum is 56.

The spelling of 21883578374 in words is "twenty-one billion, eight hundred eighty-three million, five hundred seventy-eight thousand, three hundred seventy-four".