8111645057 has 8 divisors (see below), whose sum is σ = 8173689480. Its totient is φ = 8049807360.

The previous prime is 8111645033. The next prime is 8111645119. The reversal of 8111645057 is 7505461118.

It can be written as a sum of positive squares in 4 ways, for example, as 4453693696 + 3657951361 = 66736^2 + 60481^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8111645057 - 2⁶ = 8111644993 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8111645057.

It is not an unprimeable number, because it can be changed into a prime (8111645027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27557 + ... + 130317.

It is an arithmetic number, because the mean of its divisors is an integer number (1021711185).

Almost surely, 2^8111645057 is an apocalyptic number.

It is an amenable number.

8111645057 is a deficient number, since it is larger than the sum of its proper divisors (62044423).

8111645057 is a wasteful number, since it uses less digits than its factorization.

8111645057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103363.

The product of its (nonzero) digits is 33600, while the sum is 38.

The square root of 8111645057 is about 90064.6715255210. The cubic root of 8111645057 is about 2009.2608072883.

The spelling of 8111645057 in words is "eight billion, one hundred eleven million, six hundred forty-five thousand, fifty-seven".