20257163715363 has 4 divisors (see below), whose sum is σ = 27009551620488. Its totient is φ = 13504775810240.

The previous prime is 20257163715337. The next prime is 20257163715379. The reversal of 20257163715363 is 36351736175202.

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-20257163715363 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20257163715323) 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, 3376193952558 + ... + 3376193952563.

It is an arithmetic number, because the mean of its divisors is an integer number (6752387905122).

Almost surely, 2^{20257163715363} is an apocalyptic number.

20257163715363 is a deficient number, since it is larger than the sum of its proper divisors (6752387905125).

20257163715363 is an equidigital number, since it uses as much as digits as its factorization.

20257163715363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6752387905124.

The product of its (nonzero) digits is 4762800, while the sum is 51.

It can be divided in two parts, 20257163 and 715363, that added together give a triangular number (20972526 = T₆₄₇₆).

The spelling of 20257163715363 in words is "twenty trillion, two hundred fifty-seven billion, one hundred sixty-three million, seven hundred fifteen thousand, three hundred sixty-three".