2616523665 has 32 divisors (see below), whose sum is σ = 4789436160. Its totient is φ = 1194891264.

The previous prime is 2616523661. The next prime is 2616523667. The reversal of 2616523665 is 5663256162.

It is not a de Polignac number, because 2616523665 - 2² = 2616523661 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2616523661) 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, 93597 + ... + 118293.

It is an arithmetic number, because the mean of its divisors is an integer number (149669880).

Almost surely, 2^2616523665 is an apocalyptic number.

It is an amenable number.

2616523665 is a deficient number, since it is larger than the sum of its proper divisors (2172912495).

2616523665 is a wasteful number, since it uses less digits than its factorization.

2616523665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25721.

The product of its digits is 388800, while the sum is 42.

The square root of 2616523665 is about 51151.9663844900. The cubic root of 2616523665 is about 1377.9756893271.

The spelling of 2616523665 in words is "two billion, six hundred sixteen million, five hundred twenty-three thousand, six hundred sixty-five".