13632641785 has 16 divisors (see below), whose sum is σ = 19795971456. Its totient is φ = 8798208768.

The previous prime is 13632641767. The next prime is 13632641807. The reversal of 13632641785 is 58714623631.

It is a cyclic number.

It is not a de Polignac number, because 13632641785 - 2⁵ = 13632641753 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11455407 + ... + 11456596.

It is an arithmetic number, because the mean of its divisors is an integer number (1237248216).

Almost surely, 2^13632641785 is an apocalyptic number.

It is an amenable number.

13632641785 is a deficient number, since it is larger than the sum of its proper divisors (6163329671).

13632641785 is a wasteful number, since it uses less digits than its factorization.

13632641785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22912032.

The product of its digits is 725760, while the sum is 46.

The spelling of 13632641785 in words is "thirteen billion, six hundred thirty-two million, six hundred forty-one thousand, seven hundred eighty-five".