11885077865 has 8 divisors (see below), whose sum is σ = 14276491008. Its totient is φ = 9498463920.

The previous prime is 11885077861. The next prime is 11885077871. The reversal of 11885077865 is 56877058811.

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

It is not a de Polignac number, because 11885077865 - 2² = 11885077861 is a prime.

It is a super-2 number, since 2×11885077865² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11885077865.

It is not an unprimeable number, because it can be changed into a prime (11885077861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1194347 + ... + 1204256.

It is an arithmetic number, because the mean of its divisors is an integer number (1784561376).

Almost surely, 2^11885077865 is an apocalyptic number.

It is an amenable number.

11885077865 is a deficient number, since it is larger than the sum of its proper divisors (2391413143).

11885077865 is an equidigital number, since it uses as much as digits as its factorization.

11885077865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2399599.

The product of its (nonzero) digits is 3763200, while the sum is 56.

The spelling of 11885077865 in words is "eleven billion, eight hundred eighty-five million, seventy-seven thousand, eight hundred sixty-five".