20971465698 has 16 divisors (see below), whose sum is σ = 41945548320. Its totient is φ = 6990052416.

The previous prime is 20971465687. The next prime is 20971465699. The reversal of 20971465698 is 89656417902.

It is not an unprimeable number, because it can be changed into a prime (20971465699) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4186 + ... + 204842.

It is an arithmetic number, because the mean of its divisors is an integer number (2621596770).

Almost surely, 2^20971465698 is an apocalyptic number.

20971465698 is an abundant number, since it is smaller than the sum of its proper divisors (20974082622).

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

20971465698 is a wasteful number, since it uses less digits than its factorization.

20971465698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218081.

The product of its (nonzero) digits is 6531840, while the sum is 57.

The spelling of 20971465698 in words is "twenty billion, nine hundred seventy-one million, four hundred sixty-five thousand, six hundred ninety-eight".