11872312765 has 8 divisors (see below), whose sum is σ = 14282305848. Its totient is φ = 9474163200.

The previous prime is 11872312747. The next prime is 11872312841. The reversal of 11872312765 is 56721327811.

It can be written as a sum of positive squares in 4 ways, for example, as 3288104964 + 8584207801 = 57342^2 + 92651^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-11872312765 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2958672 + ... + 2962681.

It is an arithmetic number, because the mean of its divisors is an integer number (1785288231).

Almost surely, 2^11872312765 is an apocalyptic number.

It is an amenable number.

11872312765 is a deficient number, since it is larger than the sum of its proper divisors (2409993083).

11872312765 is an equidigital number, since it uses as much as digits as its factorization.

11872312765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5921759.

The product of its digits is 141120, while the sum is 43.

The spelling of 11872312765 in words is "eleven billion, eight hundred seventy-two million, three hundred twelve thousand, seven hundred sixty-five".