13646064641 has 8 divisors (see below), whose sum is σ = 15053882400. Its totient is φ = 12266124640.

The previous prime is 13646064599. The next prime is 13646064643. The reversal of 13646064641 is 14646064631.

It is a happy number.

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

It is not a de Polignac number, because 13646064641 - 2¹⁰ = 13646063617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13646064643) 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, 6968411 + ... + 6970368.

It is an arithmetic number, because the mean of its divisors is an integer number (1881735300).

Almost surely, 2^13646064641 is an apocalyptic number.

13646064641 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13646064641 is a deficient number, since it is larger than the sum of its proper divisors (1407817759).

13646064641 is a wasteful number, since it uses less digits than its factorization.

13646064641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13938879.

The product of its (nonzero) digits is 248832, while the sum is 41.

The spelling of 13646064641 in words is "thirteen billion, six hundred forty-six million, sixty-four thousand, six hundred forty-one".