21514506000 has 160 divisors (see below), whose sum is σ = 74698635648. Its totient is φ = 5295859200.

The previous prime is 21514505989. The next prime is 21514506017. The reversal of 21514506000 is 60541512.

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 31 ways as a sum of consecutive naturals, for example, 59914 + ... + 215913.

Almost surely, 2^21514506000 is an apocalyptic number.

21514506000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21514506000 is an abundant number, since it is smaller than the sum of its proper divisors (53184129648).

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

21514506000 is a wasteful number, since it uses less digits than its factorization.

21514506000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275866 (or 275850 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The spelling of 21514506000 in words is "twenty-one billion, five hundred fourteen million, five hundred six thousand".