2559164661 has 12 divisors (see below), whose sum is σ = 3697103488. Its totient is φ = 1705864104.

The previous prime is 2559164639. The next prime is 2559164693. The reversal of 2559164661 is 1664619552.

It is not a de Polignac number, because 2559164661 - 2¹⁵ = 2559131893 is a prime.

It is a super-2 number, since 2×2559164661² = 13098647524222489842, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2559160661) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 63726 + ... + 95808.

Almost surely, 2^2559164661 is an apocalyptic number.

It is an amenable number.

2559164661 is a deficient number, since it is larger than the sum of its proper divisors (1137938827).

2559164661 is a wasteful number, since it uses less digits than its factorization.

2559164661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40952 (or 40949 counting only the distinct ones).

The product of its digits is 388800, while the sum is 45.

The square root of 2559164661 is about 50588.1869708730. The cubic root of 2559164661 is about 1367.8319484881.

The spelling of 2559164661 in words is "two billion, five hundred fifty-nine million, one hundred sixty-four thousand, six hundred sixty-one".