12633365645 has 4 divisors (see below), whose sum is σ = 15160038780. Its totient is φ = 10106692512.

The previous prime is 12633365627. The next prime is 12633365653. The reversal of 12633365645 is 54656333621.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1919666596 + 10713699049 = 43814^2 + 103507^2 .

It is a cyclic number.

It is not a de Polignac number, because 12633365645 - 2⁸ = 12633365389 is a prime.

It is a super-3 number, since 3×12633365645³ (a number of 31 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12633365596 and 12633365605.

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, 1263336560 + ... + 1263336569.

It is an arithmetic number, because the mean of its divisors is an integer number (3790009695).

Almost surely, 2^12633365645 is an apocalyptic number.

It is an amenable number.

12633365645 is a deficient number, since it is larger than the sum of its proper divisors (2526673135).

12633365645 is an equidigital number, since it uses as much as digits as its factorization.

12633365645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2526673134.

The product of its digits is 1166400, while the sum is 44.

The spelling of 12633365645 in words is "twelve billion, six hundred thirty-three million, three hundred sixty-five thousand, six hundred forty-five".