21264463706 has 32 divisors (see below), whose sum is σ = 32868605952. Its totient is φ = 10312723440.

The previous prime is 21264463699. The next prime is 21264463747. The reversal of 21264463706 is 60736446212.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 5759321 + ... + 5763011.

It is an arithmetic number, because the mean of its divisors is an integer number (1027143936).

Almost surely, 2^21264463706 is an apocalyptic number.

21264463706 is a deficient number, since it is larger than the sum of its proper divisors (11604142246).

21264463706 is a wasteful number, since it uses less digits than its factorization.

21264463706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4274.

The product of its (nonzero) digits is 290304, while the sum is 41.

The spelling of 21264463706 in words is "twenty-one billion, two hundred sixty-four million, four hundred sixty-three thousand, seven hundred six".