2536534656 has 128 divisors (see below), whose sum is σ = 7880520000. Its totient is φ = 800990208.

The previous prime is 2536534643. The next prime is 2536534661. The reversal of 2536534656 is 6564356352.

2536534656 is a `hidden beast` number, since 2 + 53 + 6 + 534 + 65 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×2536534656² = 12868016122178076672, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46350 + ... + 84978.

Almost surely, 2^2536534656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2536534656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3940260000).

2536534656 is an abundant number, since it is smaller than the sum of its proper divisors (5343985344).

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

2536534656 is a wasteful number, since it uses less digits than its factorization.

2536534656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38671 (or 38653 counting only the distinct ones).

The product of its digits is 1944000, while the sum is 45.

The square root of 2536534656 is about 50364.0214438839. The cubic root of 2536534656 is about 1363.7882157003.

The spelling of 2536534656 in words is "two billion, five hundred thirty-six million, five hundred thirty-four thousand, six hundred fifty-six".