8157357246523 has 4 divisors (see below), whose sum is σ = 8241453713080. Its totient is φ = 8073260779968.

The previous prime is 8157357246517. The next prime is 8157357246551. The reversal of 8157357246523 is 3256427537518.

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-8157357246523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8157357246553) 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, 42048233133 + ... + 42048233326.

It is an arithmetic number, because the mean of its divisors is an integer number (2060363428270).

Almost surely, 2^{8157357246523} is an apocalyptic number.

8157357246523 is a deficient number, since it is larger than the sum of its proper divisors (84096466557).

8157357246523 is an equidigital number, since it uses as much as digits as its factorization.

8157357246523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84096466556.

The product of its digits is 42336000, while the sum is 58.

The spelling of 8157357246523 in words is "eight trillion, one hundred fifty-seven billion, three hundred fifty-seven million, two hundred forty-six thousand, five hundred twenty-three".