20145736875 has 80 divisors (see below), whose sum is σ = 37607961600. Its totient is φ = 9503280000.

The previous prime is 20145736859. The next prime is 20145736889. The reversal of 20145736875 is 57863754102.

It is not a de Polignac number, because 20145736875 - 2⁴ = 20145736859 is a prime.

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 79 ways as a sum of consecutive naturals, for example, 749926 + ... + 776324.

It is an arithmetic number, because the mean of its divisors is an integer number (470099520).

Almost surely, 2^20145736875 is an apocalyptic number.

20145736875 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20145736875 is a deficient number, since it is larger than the sum of its proper divisors (17462224725).

20145736875 is a wasteful number, since it uses less digits than its factorization.

20145736875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26470 (or 26455 counting only the distinct ones).

The product of its (nonzero) digits is 1411200, while the sum is 48.

The spelling of 20145736875 in words is "twenty billion, one hundred forty-five million, seven hundred thirty-six thousand, eight hundred seventy-five".