11865234375 has 72 divisors (see below), whose sum is σ = 22216796784. Its totient is φ = 6328125000.

The previous prime is 11865234343. The next prime is 11865234383. The reversal of 11865234375 is 57343256811.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

11865234375 is a `hidden beast` number, since 1 + 1 + 86 + 523 + 43 + 7 + 5 = 666.

It is an ABA number since it can be written as A⋅B^A, here for A=5, B=75.

It is not a de Polignac number, because 11865234375 - 2⁵ = 11865234343 is a prime.

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

Its product of digits (604800) is a multiple of the sum of its prime divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 11865234375.

It is a congruent number.

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, 2373046873 + ... + 2373046877.

It is an arithmetic number, because the mean of its divisors is an integer number (308566622).

Almost surely, 2^11865234375 is an apocalyptic number.

11865234375 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11865234375 is a deficient number, since it is larger than the sum of its proper divisors (10351562409).

11865234375 is an frugal number, since it uses more digits than its factorization.

11865234375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70 (or 8 counting only the distinct ones).

The product of its digits is 604800, while the sum is 45.

The spelling of 11865234375 in words is "eleven billion, eight hundred sixty-five million, two hundred thirty-four thousand, three hundred seventy-five".