2577991089 has 8 divisors (see below), whose sum is σ = 3493671232. Its totient is φ = 1690485840.

The previous prime is 2577991067. The next prime is 2577991109. The reversal of 2577991089 is 9801997752.

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

It is a de Polignac number, because none of the positive numbers 2^k-2577991089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2577991189) 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, 7043509 + ... + 7043874.

It is an arithmetic number, because the mean of its divisors is an integer number (436708904).

Almost surely, 2^2577991089 is an apocalyptic number.

It is an amenable number.

2577991089 is a deficient number, since it is larger than the sum of its proper divisors (915680143).

2577991089 is a wasteful number, since it uses less digits than its factorization.

2577991089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14087447.

The product of its (nonzero) digits is 2857680, while the sum is 57.

The square root of 2577991089 is about 50773.9213474792. The cubic root of 2577991089 is about 1371.1778970610.

The spelling of 2577991089 in words is "two billion, five hundred seventy-seven million, nine hundred ninety-one thousand, eighty-nine".