21316259192 has 32 divisors (see below), whose sum is σ = 40655046720. Its totient is φ = 10475187840.

The previous prime is 21316259189. The next prime is 21316259207. The reversal of 21316259192 is 29195261312.

It is a congruent number.

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, 631118 + ... + 664034.

It is an arithmetic number, because the mean of its divisors is an integer number (1270470210).

Almost surely, 2^21316259192 is an apocalyptic number.

It is an amenable number.

21316259192 is a deficient number, since it is larger than the sum of its proper divisors (19338787528).

21316259192 is a wasteful number, since it uses less digits than its factorization.

21316259192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34311 (or 34307 counting only the distinct ones).

The product of its digits is 58320, while the sum is 41.

The spelling of 21316259192 in words is "twenty-one billion, three hundred sixteen million, two hundred fifty-nine thousand, one hundred ninety-two".