11855870615 has 8 divisors (see below), whose sum is σ = 14228450880. Its totient is φ = 9483759072.

The previous prime is 11855870573. The next prime is 11855870623. The reversal of 11855870615 is 51607855811.

It is a happy number.

11855870615 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11855870615 - 2²⁰ = 11854822039 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11855870615.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58895 + ... + 164864.

It is an arithmetic number, because the mean of its divisors is an integer number (1778556360).

Almost surely, 2^11855870615 is an apocalyptic number.

11855870615 is a deficient number, since it is larger than the sum of its proper divisors (2372580265).

11855870615 is a wasteful number, since it uses less digits than its factorization.

11855870615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234361.

The product of its (nonzero) digits is 336000, while the sum is 47.

The spelling of 11855870615 in words is "eleven billion, eight hundred fifty-five million, eight hundred seventy thousand, six hundred fifteen".