21923155364 has 48 divisors (see below), whose sum is σ = 43739256960. Its totient is φ = 9517347840.

The previous prime is 21923155363. The next prime is 21923155393. The reversal of 21923155364 is 46355132912.

It is a super-2 number, since 2×21923155364² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21923155363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 664982 + ... + 697170.

It is an arithmetic number, because the mean of its divisors is an integer number (911234520).

Almost surely, 2^21923155364 is an apocalyptic number.

It is an amenable number.

21923155364 is a deficient number, since it is larger than the sum of its proper divisors (21816101596).

21923155364 is a wasteful number, since it uses less digits than its factorization.

21923155364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32900 (or 32898 counting only the distinct ones).

The product of its digits is 194400, while the sum is 41.

The spelling of 21923155364 in words is "twenty-one billion, nine hundred twenty-three million, one hundred fifty-five thousand, three hundred sixty-four".