20506271113699 has 96 divisors (see below), whose sum is σ = 24788154746880. Its totient is φ = 16905299104512.

The previous prime is 20506271113649. The next prime is 20506271113717. The reversal of 20506271113699 is 99631117260502.

It is not a de Polignac number, because 20506271113699 - 2³⁹ = 19956515299811 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20506271113649) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 13827559012 + ... + 13827560494.

It is an arithmetic number, because the mean of its divisors is an integer number (258209945280).

Almost surely, 2^{20506271113699} is an apocalyptic number.

20506271113699 is a deficient number, since it is larger than the sum of its proper divisors (4281883633181).

20506271113699 is a wasteful number, since it uses less digits than its factorization.

20506271113699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2097 (or 2090 counting only the distinct ones).

The product of its (nonzero) digits is 1224720, while the sum is 52.

The spelling of 20506271113699 in words is "twenty trillion, five hundred six billion, two hundred seventy-one million, one hundred thirteen thousand, six hundred ninety-nine".