21698760404 has 12 divisors (see below), whose sum is σ = 37974248928. Its totient is φ = 10848975000.

The previous prime is 21698760383. The next prime is 21698760409. The reversal of 21698760404 is 40406789612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21698760409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41579 + ... + 212429.

It is an arithmetic number, because the mean of its divisors is an integer number (3164520744).

Almost surely, 2^21698760404 is an apocalyptic number.

It is an amenable number.

21698760404 is a deficient number, since it is larger than the sum of its proper divisors (16275488524).

21698760404 is a wasteful number, since it uses less digits than its factorization.

21698760404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202606 (or 202604 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 47.

The spelling of 21698760404 in words is "twenty-one billion, six hundred ninety-eight million, seven hundred sixty thousand, four hundred four".