20539167775 has 12 divisors (see below), whose sum is σ = 29106935152. Its totient is φ = 14084000640.

The previous prime is 20539167767. The next prime is 20539167787. The reversal of 20539167775 is 57776193502.

It is not a de Polignac number, because 20539167775 - 2³ = 20539167767 is a prime.

It is a hoax number, since the sum of its digits (52) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 58683162 + ... + 58683511.

Almost surely, 2^20539167775 is an apocalyptic number.

20539167775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20539167775 is a deficient number, since it is larger than the sum of its proper divisors (8567767377).

20539167775 is a wasteful number, since it uses less digits than its factorization.

20539167775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117366690 (or 117366685 counting only the distinct ones).

The product of its (nonzero) digits is 2778300, while the sum is 52.

The spelling of 20539167775 in words is "twenty billion, five hundred thirty-nine million, one hundred sixty-seven thousand, seven hundred seventy-five".