11664233431515 has 72 divisors (see below), whose sum is σ = 24277577770368. Its totient is φ = 5160213838080.

The previous prime is 11664233431483. The next prime is 11664233431553. The reversal of 11664233431515 is 51513433246611.

11664233431515 is a `hidden beast` number, since 1 + 1 + 6 + 64 + 2 + 33 + 43 + 1 + 515 = 666.

It is not a de Polignac number, because 11664233431515 - 2⁵ = 11664233431483 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 85252642 + ... + 85389351.

It is an arithmetic number, because the mean of its divisors is an integer number (337188580144).

Almost surely, 2^{11664233431515} is an apocalyptic number.

11664233431515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11664233431515 is an abundant number, since it is smaller than the sum of its proper divisors (12613344338853).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11664233431515 is a wasteful number, since it uses less digits than its factorization.

11664233431515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170642049 (or 170642039 counting only the distinct ones).

The product of its digits is 777600, while the sum is 45.

The spelling of 11664233431515 in words is "eleven trillion, six hundred sixty-four billion, two hundred thirty-three million, four hundred thirty-one thousand, five hundred fifteen".