13646141613 has 24 divisors (see below), whose sum is σ = 21437521560. Its totient is φ = 8314473600.

The previous prime is 13646141611. The next prime is 13646141629. The reversal of 13646141613 is 31614164631.

13646141613 is a `hidden beast` number, since 1 + 3 + 646 + 1 + 4 + 1 + 6 + 1 + 3 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 3542273289 + 10103868324 = 59517^2 + 100518^2 .

It is not a de Polignac number, because 13646141613 - 2¹ = 13646141611 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13646141611) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 565578 + ... + 589211.

It is an arithmetic number, because the mean of its divisors is an integer number (893230065).

Almost surely, 2^13646141613 is an apocalyptic number.

13646141613 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

13646141613 is a deficient number, since it is larger than the sum of its proper divisors (7791379947).

13646141613 is a wasteful number, since it uses less digits than its factorization.

13646141613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1154909 (or 1154906 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The spelling of 13646141613 in words is "thirteen billion, six hundred forty-six million, one hundred forty-one thousand, six hundred thirteen".