21412510152 has 64 divisors (see below), whose sum is σ = 58430030400. Its totient is φ = 6485053440.

The previous prime is 21412510129. The next prime is 21412510187. The reversal of 21412510152 is 25101521412.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 477228 + ... + 520164.

It is an arithmetic number, because the mean of its divisors is an integer number (912969225).

Almost surely, 2^21412510152 is an apocalyptic number.

21412510152 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21412510152 is an abundant number, since it is smaller than the sum of its proper divisors (37017520248).

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

21412510152 is a wasteful number, since it uses less digits than its factorization.

21412510152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44846 (or 44842 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 24.

The spelling of 21412510152 in words is "twenty-one billion, four hundred twelve million, five hundred ten thousand, one hundred fifty-two".