13047433665 has 32 divisors (see below), whose sum is σ = 25113861120. Its totient is φ = 5650617024.

The previous prime is 13047433613. The next prime is 13047433687. The reversal of 13047433665 is 56633474031.

It is not a de Polignac number, because 13047433665 - 2⁶ = 13047433601 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3268039 + ... + 3272028.

It is an arithmetic number, because the mean of its divisors is an integer number (784808160).

Almost surely, 2^13047433665 is an apocalyptic number.

13047433665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13047433665 is a deficient number, since it is larger than the sum of its proper divisors (12066427455).

13047433665 is a wasteful number, since it uses less digits than its factorization.

13047433665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6540101.

The product of its (nonzero) digits is 544320, while the sum is 42.

The spelling of 13047433665 in words is "thirteen billion, forty-seven million, four hundred thirty-three thousand, six hundred sixty-five".