13166787875 has 16 divisors (see below), whose sum is σ = 16454867520. Its totient is φ = 10518868800.

The previous prime is 13166787869. The next prime is 13166787877. The reversal of 13166787875 is 57878766131.

It is a happy number.

It is not a de Polignac number, because 13166787875 - 2¹⁶ = 13166722339 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13166787877) 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, 18431 + ... + 163319.

It is an arithmetic number, because the mean of its divisors is an integer number (1028429220).

Almost surely, 2^13166787875 is an apocalyptic number.

13166787875 is a deficient number, since it is larger than the sum of its proper divisors (3288079645).

13166787875 is an equidigital number, since it uses as much as digits as its factorization.

13166787875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145631 (or 145621 counting only the distinct ones).

The product of its digits is 11854080, while the sum is 59.

The spelling of 13166787875 in words is "thirteen billion, one hundred sixty-six million, seven hundred eighty-seven thousand, eight hundred seventy-five".