20015863492 has 12 divisors (see below), whose sum is σ = 35773032960. Its totient is φ = 9794996936.

The previous prime is 20015863463. The next prime is 20015863507. The reversal of 20015863492 is 29436851002.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53233492 + ... + 53233867.

It is an arithmetic number, because the mean of its divisors is an integer number (2981086080).

Almost surely, 2^20015863492 is an apocalyptic number.

It is an amenable number.

20015863492 is a deficient number, since it is larger than the sum of its proper divisors (15757169468).

20015863492 is a wasteful number, since it uses less digits than its factorization.

20015863492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106467410 (or 106467408 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 40.

The spelling of 20015863492 in words is "twenty billion, fifteen million, eight hundred sixty-three thousand, four hundred ninety-two".