20274754731 has 16 divisors (see below), whose sum is σ = 33703488768. Its totient is φ = 10532340000.

The previous prime is 20274754711. The next prime is 20274754741. The reversal of 20274754731 is 13745747202.

It is not a de Polignac number, because 20274754731 - 2¹⁵ = 20274721963 is a prime.

It is a super-2 number, since 2×20274754731² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20274754711) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 43884520 + ... + 43884981.

It is an arithmetic number, because the mean of its divisors is an integer number (2106468048).

Almost surely, 2^20274754731 is an apocalyptic number.

20274754731 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20274754731 is a deficient number, since it is larger than the sum of its proper divisors (13428734037).

20274754731 is a wasteful number, since it uses less digits than its factorization.

20274754731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87769522.

The product of its (nonzero) digits is 329280, while the sum is 42.

The spelling of 20274754731 in words is "twenty billion, two hundred seventy-four million, seven hundred fifty-four thousand, seven hundred thirty-one".