20456206274361 has 64 divisors (see below), whose sum is σ = 33997293582336. Its totient is φ = 10748914713600.

The previous prime is 20456206274347. The next prime is 20456206274393. The reversal of 20456206274361 is 16347260265402.

It is a happy number.

It is not a de Polignac number, because 20456206274361 - 2²¹ = 20456204177209 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20456206274361.

It is not an unprimeable number, because it can be changed into a prime (20456206274311) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 724540 + ... + 6437186.

It is an arithmetic number, because the mean of its divisors is an integer number (531207712224).

Almost surely, 2^{20456206274361} is an apocalyptic number.

It is an amenable number.

20456206274361 is a deficient number, since it is larger than the sum of its proper divisors (13541087307975).

20456206274361 is a wasteful number, since it uses less digits than its factorization.

20456206274361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5713182.

The product of its (nonzero) digits is 2903040, while the sum is 48.

The spelling of 20456206274361 in words is "twenty trillion, four hundred fifty-six billion, two hundred six million, two hundred seventy-four thousand, three hundred sixty-one".