13213642635 has 12 divisors (see below), whose sum is σ = 22903647312. Its totient is φ = 7047276048.

The previous prime is 13213642613. The next prime is 13213642639. The reversal of 13213642635 is 53624631231.

13213642635 is a `hidden beast` number, since 1 + 3 + 2 + 1 + 3 + 642 + 6 + 3 + 5 = 666.

13213642635 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13213642635 - 2¹² = 13213638539 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13213642635.

It is not an unprimeable number, because it can be changed into a prime (13213642639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 146818207 + ... + 146818296.

It is an arithmetic number, because the mean of its divisors is an integer number (1908637276).

Almost surely, 2^13213642635 is an apocalyptic number.

13213642635 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13213642635 is a deficient number, since it is larger than the sum of its proper divisors (9690004677).

13213642635 is a wasteful number, since it uses less digits than its factorization.

13213642635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293636514 (or 293636511 counting only the distinct ones).

The product of its digits is 77760, while the sum is 36.

The spelling of 13213642635 in words is "thirteen billion, two hundred thirteen million, six hundred forty-two thousand, six hundred thirty-five".