2660453656 has 16 divisors (see below), whose sum is σ = 5700972240. Its totient is φ = 1140194400.

The previous prime is 2660453639. The next prime is 2660453669. The reversal of 2660453656 is 6563540662.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23753995 + ... + 23754106.

It is an arithmetic number, because the mean of its divisors is an integer number (356310765).

Almost surely, 2^2660453656 is an apocalyptic number.

It is an amenable number.

2660453656 is an abundant number, since it is smaller than the sum of its proper divisors (3040518584).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2660453656 is a wasteful number, since it uses less digits than its factorization.

2660453656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47508114 (or 47508110 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 43.

The square root of 2660453656 is about 51579.5856516898. The cubic root of 2660453656 is about 1385.6447459690.

The spelling of 2660453656 in words is "two billion, six hundred sixty million, four hundred fifty-three thousand, six hundred fifty-six".