13166505315 has 64 divisors (see below), whose sum is σ = 24094310400. Its totient is φ = 6816845952.

The previous prime is 13166505301. The next prime is 13166505323. The reversal of 13166505315 is 51350566131.

13166505315 is a `hidden beast` number, since 13 + 1 + 66 + 50 + 531 + 5 = 666.

It is not a de Polignac number, because 13166505315 - 2⁶ = 13166505251 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13166505315.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2389854 + ... + 2395356.

It is an arithmetic number, because the mean of its divisors is an integer number (376473600).

Almost surely, 2^13166505315 is an apocalyptic number.

13166505315 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13166505315 is a deficient number, since it is larger than the sum of its proper divisors (10927805085).

13166505315 is a wasteful number, since it uses less digits than its factorization.

13166505315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6033 (or 6027 counting only the distinct ones).

The product of its (nonzero) digits is 40500, while the sum is 36.

The spelling of 13166505315 in words is "thirteen billion, one hundred sixty-six million, five hundred five thousand, three hundred fifteen".