8064742557 has 32 divisors (see below), whose sum is σ = 11503410048. Its totient is φ = 5008111616.

The previous prime is 8064742531. The next prime is 8064742589. The reversal of 8064742557 is 7552474608.

It is a cyclic number.

It is not a de Polignac number, because 8064742557 - 2⁷ = 8064742429 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8064742507) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2053798 + ... + 2057720.

It is an arithmetic number, because the mean of its divisors is an integer number (359481564).

Almost surely, 2^8064742557 is an apocalyptic number.

It is an amenable number.

8064742557 is a deficient number, since it is larger than the sum of its proper divisors (3438667491).

8064742557 is a wasteful number, since it uses less digits than its factorization.

8064742557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4349.

The product of its (nonzero) digits is 1881600, while the sum is 48.

The square root of 8064742557 is about 89803.9117021079. The cubic root of 8064742557 is about 2005.3807240059.

The spelling of 8064742557 in words is "eight billion, sixty-four million, seven hundred forty-two thousand, five hundred fifty-seven".