12733660785 has 16 divisors (see below), whose sum is σ = 20660814720. Its totient is φ = 6695633280.

The previous prime is 12733660769. The next prime is 12733660789. The reversal of 12733660785 is 58706633721.

It is not a de Polignac number, because 12733660785 - 2⁴ = 12733660769 is a prime.

It is a super-2 number, since 2×12733660785² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12733660789) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5977180 + ... + 5979309.

It is an arithmetic number, because the mean of its divisors is an integer number (1291300920).

Almost surely, 2^12733660785 is an apocalyptic number.

12733660785 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12733660785 is a deficient number, since it is larger than the sum of its proper divisors (7927153935).

12733660785 is a wasteful number, since it uses less digits than its factorization.

12733660785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11956568.

The product of its (nonzero) digits is 1270080, while the sum is 48.

The spelling of 12733660785 in words is "twelve billion, seven hundred thirty-three million, six hundred sixty thousand, seven hundred eighty-five".