12635243500653 has 48 divisors (see below), whose sum is σ = 18784585138176. Its totient is φ = 8179998896160.

The previous prime is 12635243500643. The next prime is 12635243500669. The reversal of 12635243500653 is 35600534253621.

12635243500653 is a `hidden beast` number, since 1 + 2 + 6 + 3 + 52 + 43 + 500 + 6 + 53 = 666.

It is not a de Polignac number, because 12635243500653 - 2²⁵ = 12635209946221 is a prime.

It is a super-3 number, since 3×12635243500653³ (a number of 40 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 12635243500599 and 12635243500608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12635243500643) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 425944900 + ... + 425974562.

It is an arithmetic number, because the mean of its divisors is an integer number (391345523712).

Almost surely, 2^{12635243500653} is an apocalyptic number.

It is an amenable number.

12635243500653 is a deficient number, since it is larger than the sum of its proper divisors (6149341637523).

12635243500653 is a wasteful number, since it uses less digits than its factorization.

12635243500653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37534 (or 37531 counting only the distinct ones).

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

The spelling of 12635243500653 in words is "twelve trillion, six hundred thirty-five billion, two hundred forty-three million, five hundred thousand, six hundred fifty-three".