13134640646 has 16 divisors (see below), whose sum is σ = 19975334400. Its totient is φ = 6476395848.

The previous prime is 13134640621. The next prime is 13134640679. The reversal of 13134640646 is 64604643131.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83021 + ... + 182103.

It is an arithmetic number, because the mean of its divisors is an integer number (1248458400).

Almost surely, 2^13134640646 is an apocalyptic number.

13134640646 is a deficient number, since it is larger than the sum of its proper divisors (6840693754).

13134640646 is an equidigital number, since it uses as much as digits as its factorization.

13134640646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100003.

The product of its (nonzero) digits is 124416, while the sum is 38.

The spelling of 13134640646 in words is "thirteen billion, one hundred thirty-four million, six hundred forty thousand, six hundred forty-six".