13166981757 has 16 divisors (see below), whose sum is σ = 20135887360. Its totient is φ = 8494826400.

The previous prime is 13166981753. The next prime is 13166981761. The reversal of 13166981757 is 75718966131.

It is an interprime number because it is at equal distance from previous prime (13166981753) and next prime (13166981761).

It is not a de Polignac number, because 13166981757 - 2² = 13166981753 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13166981753) 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, 7864744 + ... + 7866417.

It is an arithmetic number, because the mean of its divisors is an integer number (1258492960).

Almost surely, 2^13166981757 is an apocalyptic number.

It is an amenable number.

13166981757 is a deficient number, since it is larger than the sum of its proper divisors (6968905603).

13166981757 is a wasteful number, since it uses less digits than its factorization.

13166981757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15731201 (or 15731195 counting only the distinct ones).

The product of its digits is 1905120, while the sum is 54.

The spelling of 13166981757 in words is "thirteen billion, one hundred sixty-six million, nine hundred eighty-one thousand, seven hundred fifty-seven".