12653604450 has 36 divisors (see below), whose sum is σ = 33996018498. Its totient is φ = 3374294400.

The previous prime is 12653604443. The next prime is 12653604497. The reversal of 12653604450 is 5440635621.

12653604450 is a `hidden beast` number, since 1 + 2 + 6 + 5 + 3 + 604 + 45 + 0 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 7795653849 + 4857950601 = 88293^2 + 69699^2 .

It is a super-2 number, since 2×12653604450² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 14059111 + ... + 14060010.

Almost surely, 2^12653604450 is an apocalyptic number.

12653604450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12653604450 is an abundant number, since it is smaller than the sum of its proper divisors (21342414048).

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

12653604450 is a wasteful number, since it uses less digits than its factorization.

12653604450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28119139 (or 28119131 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The spelling of 12653604450 in words is "twelve billion, six hundred fifty-three million, six hundred four thousand, four hundred fifty".