21458263364 has 48 divisors (see below), whose sum is σ = 40221242880. Its totient is φ = 9994682880.

The previous prime is 21458263363. The next prime is 21458263427. The reversal of 21458263364 is 46336285412.

It is not an unprimeable number, because it can be changed into a prime (21458263363) 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, 1202999 + ... + 1220705.

It is an arithmetic number, because the mean of its divisors is an integer number (837942560).

Almost surely, 2^21458263364 is an apocalyptic number.

It is an amenable number.

21458263364 is a deficient number, since it is larger than the sum of its proper divisors (18762979516).

21458263364 is a wasteful number, since it uses less digits than its factorization.

21458263364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18108 (or 18106 counting only the distinct ones).

The product of its digits is 829440, while the sum is 44.

The spelling of 21458263364 in words is "twenty-one billion, four hundred fifty-eight million, two hundred sixty-three thousand, three hundred sixty-four".