2566165512 has 32 divisors (see below), whose sum is σ = 6416776800. Its totient is φ = 855206784.

The previous prime is 2566165489. The next prime is 2566165541. The reversal of 2566165512 is 2155616652.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151788 + ... + 167844.

It is an arithmetic number, because the mean of its divisors is an integer number (200524275).

Almost surely, 2^2566165512 is an apocalyptic number.

It is an amenable number.

2566165512 is an abundant number, since it is smaller than the sum of its proper divisors (3850611288).

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

2566165512 is a wasteful number, since it uses less digits than its factorization.

2566165512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22725 (or 22721 counting only the distinct ones).

The product of its digits is 108000, while the sum is 39.

The square root of 2566165512 is about 50657.3342370086. The cubic root of 2566165512 is about 1369.0780932468.

The spelling of 2566165512 in words is "two billion, five hundred sixty-six million, one hundred sixty-five thousand, five hundred twelve".