20117055512 has 8 divisors (see below), whose sum is σ = 37719479100. Its totient is φ = 10058527752.

The previous prime is 20117055503. The next prime is 20117055521. The reversal of 20117055512 is 21555071102.

It is an interprime number because it is at equal distance from previous prime (20117055503) and next prime (20117055521).

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1257315962 + ... + 1257315977.

Almost surely, 2^20117055512 is an apocalyptic number.

It is an amenable number.

20117055512 is a deficient number, since it is larger than the sum of its proper divisors (17602423588).

20117055512 is a wasteful number, since it uses less digits than its factorization.

20117055512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2514631945 (or 2514631941 counting only the distinct ones).

The product of its (nonzero) digits is 3500, while the sum is 29.

The spelling of 20117055512 in words is "twenty billion, one hundred seventeen million, fifty-five thousand, five hundred twelve".