20257723231363 has 4 divisors (see below), whose sum is σ = 20304507812008. Its totient is φ = 20210938650720.

The previous prime is 20257723231349. The next prime is 20257723231373. The reversal of 20257723231363 is 36313232775202.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20257723231363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20257723231373) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23392289673 + ... + 23392290538.

It is an arithmetic number, because the mean of its divisors is an integer number (5076126953002).

Almost surely, 2^{20257723231363} is an apocalyptic number.

20257723231363 is a deficient number, since it is larger than the sum of its proper divisors (46784580645).

20257723231363 is an equidigital number, since it uses as much as digits as its factorization.

20257723231363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46784580644.

The product of its (nonzero) digits is 1905120, while the sum is 46.

The spelling of 20257723231363 in words is "twenty trillion, two hundred fifty-seven billion, seven hundred twenty-three million, two hundred thirty-one thousand, three hundred sixty-three".