2565640179641 has 32 divisors (see below), whose sum is σ = 3237004323840. Its totient is φ = 1975408948800.

The previous prime is 2565640179629. The next prime is 2565640179677. The reversal of 2565640179641 is 1469710465652.

It is a happy number.

2565640179641 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2565640179641 - 2²⁶ = 2565573070777 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2565640179601) 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, 1690295 + ... + 2826371.

It is an arithmetic number, because the mean of its divisors is an integer number (101156385120).

Almost surely, 2^{2565640179641} is an apocalyptic number.

It is an amenable number.

2565640179641 is a deficient number, since it is larger than the sum of its proper divisors (671364144199).

2565640179641 is a wasteful number, since it uses less digits than its factorization.

2565640179641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1136445.

The product of its (nonzero) digits is 10886400, while the sum is 56.

The spelling of 2565640179641 in words is "two trillion, five hundred sixty-five billion, six hundred forty million, one hundred seventy-nine thousand, six hundred forty-one".