20892731375 has 32 divisors (see below), whose sum is σ = 27325434240. Its totient is φ = 15918355200.

The previous prime is 20892731359. The next prime is 20892731381. The reversal of 20892731375 is 57313729802.

It is not a de Polignac number, because 20892731375 - 2⁴ = 20892731359 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 654281 + ... + 685469.

It is an arithmetic number, because the mean of its divisors is an integer number (853919820).

Almost surely, 2^20892731375 is an apocalyptic number.

20892731375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20892731375 is a deficient number, since it is larger than the sum of its proper divisors (6432702865).

20892731375 is a wasteful number, since it uses less digits than its factorization.

20892731375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31460 (or 31450 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 47.

The spelling of 20892731375 in words is "twenty billion, eight hundred ninety-two million, seven hundred thirty-one thousand, three hundred seventy-five".