11387522865 has 8 divisors (see below), whose sum is σ = 18220036608. Its totient is φ = 6073345520.

The previous prime is 11387522827. The next prime is 11387522897. The reversal of 11387522865 is 56822578311.

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

It is not a de Polignac number, because 11387522865 - 2¹⁹ = 11386998577 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 379584081 + ... + 379584110.

It is an arithmetic number, because the mean of its divisors is an integer number (2277504576).

Almost surely, 2^11387522865 is an apocalyptic number.

11387522865 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11387522865 is a deficient number, since it is larger than the sum of its proper divisors (6832513743).

11387522865 is an equidigital number, since it uses as much as digits as its factorization.

11387522865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 759168199.

The product of its digits is 806400, while the sum is 48.

The spelling of 11387522865 in words is "eleven billion, three hundred eighty-seven million, five hundred twenty-two thousand, eight hundred sixty-five".