21717067098 has 16 divisors (see below), whose sum is σ = 43435588320. Its totient is φ = 7238780016.

The previous prime is 21717066961. The next prime is 21717067111. The reversal of 21717067098 is 89076071712.

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, 286636 + ... + 354392.

It is an arithmetic number, because the mean of its divisors is an integer number (2714724270).

Almost surely, 2^21717067098 is an apocalyptic number.

21717067098 is an abundant number, since it is smaller than the sum of its proper divisors (21718521222).

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

21717067098 is a wasteful number, since it uses less digits than its factorization.

21717067098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121181.

The product of its (nonzero) digits is 296352, while the sum is 48.

The spelling of 21717067098 in words is "twenty-one billion, seven hundred seventeen million, sixty-seven thousand, ninety-eight".