2563521136 has 20 divisors (see below), whose sum is σ = 5418351864. Its totient is φ = 1165236800.

The previous prime is 2563521127. The next prime is 2563521179. The reversal of 2563521136 is 6311253652.

It is a super-2 number, since 2×2563521136² = 13143281229437460992, which contains 22 as substring.

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, 7282555 + ... + 7282906.

Almost surely, 2^2563521136 is an apocalyptic number.

It is an amenable number.

2563521136 is an abundant number, since it is smaller than the sum of its proper divisors (2854830728).

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

2563521136 is a wasteful number, since it uses less digits than its factorization.

2563521136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14565480 (or 14565474 counting only the distinct ones).

The product of its digits is 32400, while the sum is 34.

The square root of 2563521136 is about 50631.2268861816. The cubic root of 2563521136 is about 1368.6076635320.

Adding to 2563521136 its reverse (6311253652), we get a palindrome (8874774788).

The spelling of 2563521136 in words is "two billion, five hundred sixty-three million, five hundred twenty-one thousand, one hundred thirty-six".