21159475614 has 40 divisors (see below), whose sum is σ = 47609720928. Its totient is φ = 7023879360.

The previous prime is 21159475607. The next prime is 21159475633. The reversal of 21159475614 is 41657495112.

21159475614 is a `hidden beast` number, since 2 + 1 + 1 + 594 + 7 + 56 + 1 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 21159475614.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 231942 + ... + 310025.

Almost surely, 2^21159475614 is an apocalyptic number.

21159475614 is an abundant number, since it is smaller than the sum of its proper divisors (26450245314).

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

21159475614 is a wasteful number, since it uses less digits than its factorization.

21159475614 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542222 (or 542213 counting only the distinct ones).

The product of its digits is 302400, while the sum is 45.

The spelling of 21159475614 in words is "twenty-one billion, one hundred fifty-nine million, four hundred seventy-five thousand, six hundred fourteen".