21838578883 has 12 divisors (see below), whose sum is σ = 24007969384. Its totient is φ = 19850292000.

The previous prime is 21838578869. The next prime is 21838578893. The reversal of 21838578883 is 38887583812.

It is not a de Polignac number, because 21838578883 - 2⁵ = 21838578851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21838578803) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1517560 + ... + 1531882.

Almost surely, 2^21838578883 is an apocalyptic number.

21838578883 is a deficient number, since it is larger than the sum of its proper divisors (2169390501).

21838578883 is a wasteful number, since it uses less digits than its factorization.

21838578883 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26946 (or 26935 counting only the distinct ones).

The product of its digits is 20643840, while the sum is 61.

The spelling of 21838578883 in words is "twenty-one billion, eight hundred thirty-eight million, five hundred seventy-eight thousand, eight hundred eighty-three".