21334463892 has 72 divisors (see below), whose sum is σ = 61650388800. Its totient is φ = 6093831168.

The previous prime is 21334463869. The next prime is 21334463911. The reversal of 21334463892 is 29836443312.

21334463892 is a `hidden beast` number, since 2 + 1 + 3 + 3 + 4 + 4 + 638 + 9 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 1070959 + ... + 1090697.

It is an arithmetic number, because the mean of its divisors is an integer number (856255400).

Almost surely, 2^21334463892 is an apocalyptic number.

It is an amenable number.

21334463892 is an abundant number, since it is smaller than the sum of its proper divisors (40315924908).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21334463892 is a wasteful number, since it uses less digits than its factorization.

21334463892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24045 (or 24040 counting only the distinct ones).

The product of its digits is 746496, while the sum is 45.

The spelling of 21334463892 in words is "twenty-one billion, three hundred thirty-four million, four hundred sixty-three thousand, eight hundred ninety-two".