12475785116691 has 64 divisors (see below), whose sum is σ = 20021371991040. Its totient is φ = 7632365771520.

The previous prime is 12475785116677. The next prime is 12475785116693. The reversal of 12475785116691 is 19661158757421.

12475785116691 is a `hidden beast` number, since 1 + 2 + 4 + 7 + 57 + 8 + 511 + 6 + 69 + 1 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-12475785116691 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12475785116693) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 65597151 + ... + 65787063.

It is an arithmetic number, because the mean of its divisors is an integer number (312833937360).

Almost surely, 2^{12475785116691} is an apocalyptic number.

12475785116691 is a deficient number, since it is larger than the sum of its proper divisors (7545586874349).

12475785116691 is a wasteful number, since it uses less digits than its factorization.

12475785116691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191033 (or 191027 counting only the distinct ones).

The product of its digits is 25401600, while the sum is 63.

The spelling of 12475785116691 in words is "twelve trillion, four hundred seventy-five billion, seven hundred eighty-five million, one hundred sixteen thousand, six hundred ninety-one".