21402673160 has 32 divisors (see below), whose sum is σ = 52533835200. Its totient is φ = 7782790080.

The previous prime is 21402673157. The next prime is 21402673183. The reversal of 21402673160 is 6137620412.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24320780 + ... + 24321659.

It is an arithmetic number, because the mean of its divisors is an integer number (1641682350).

Almost surely, 2^21402673160 is an apocalyptic number.

21402673160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21402673160 is an abundant number, since it is smaller than the sum of its proper divisors (31131162040).

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

21402673160 is a wasteful number, since it uses less digits than its factorization.

21402673160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48642461 (or 48642457 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 32.

The spelling of 21402673160 in words is "twenty-one billion, four hundred two million, six hundred seventy-three thousand, one hundred sixty".