13640635203 has 8 divisors (see below), whose sum is σ = 19586553168. Its totient is φ = 8394237024.

The previous prime is 13640635187. The next prime is 13640635237. The reversal of 13640635203 is 30253604631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13640635203 - 2⁴ = 13640635187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13640635003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 174879900 + ... + 174879977.

It is an arithmetic number, because the mean of its divisors is an integer number (2448319146).

Almost surely, 2^13640635203 is an apocalyptic number.

13640635203 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

13640635203 is a deficient number, since it is larger than the sum of its proper divisors (5945917965).

13640635203 is a wasteful number, since it uses less digits than its factorization.

13640635203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349759893.

The product of its (nonzero) digits is 38880, while the sum is 33.

The spelling of 13640635203 in words is "thirteen billion, six hundred forty million, six hundred thirty-five thousand, two hundred three".