2157257713 has 16 divisors (see below), whose sum is σ = 2415974400. Its totient is φ = 1912518720.

The previous prime is 2157257689. The next prime is 2157257717. The reversal of 2157257713 is 3177527512.

It is a cyclic number.

It is not a de Polignac number, because 2157257713 - 2¹⁷ = 2157126641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2157257717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57028 + ... + 86986.

It is an arithmetic number, because the mean of its divisors is an integer number (150998400).

Almost surely, 2^2157257713 is an apocalyptic number.

It is an amenable number.

2157257713 is a deficient number, since it is larger than the sum of its proper divisors (258716687).

2157257713 is a wasteful number, since it uses less digits than its factorization.

2157257713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30192.

The product of its digits is 102900, while the sum is 40.

The square root of 2157257713 is about 46446.2884738921. The cubic root of 2157257713 is about 1292.1135380690.

The spelling of 2157257713 in words is "two billion, one hundred fifty-seven million, two hundred fifty-seven thousand, seven hundred thirteen".