2665600161 has 16 divisors (see below), whose sum is σ = 4062651264. Its totient is φ = 1522905984.

The previous prime is 2665600141. The next prime is 2665600169. The reversal of 2665600161 is 1610065662.

2665600161 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 2665600161 - 2⁵ = 2665600129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2665600169) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 147555 + ... + 164631.

It is an arithmetic number, because the mean of its divisors is an integer number (253915704).

Almost surely, 2^2665600161 is an apocalyptic number.

2665600161 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2665600161 is a deficient number, since it is larger than the sum of its proper divisors (1397051103).

2665600161 is a wasteful number, since it uses less digits than its factorization.

2665600161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24520.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 2665600161 is about 51629.4505200278. The cubic root of 2665600161 is about 1386.5376556184.

The spelling of 2665600161 in words is "two billion, six hundred sixty-five million, six hundred thousand, one hundred sixty-one".