11877541865 has 32 divisors (see below), whose sum is σ = 16832382720. Its totient is φ = 7875719424.

The previous prime is 11877541859. The next prime is 11877541873. The reversal of 11877541865 is 56814577811.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 11877541865 - 2¹² = 11877537769 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 182951 + ... + 239219.

It is an arithmetic number, because the mean of its divisors is an integer number (526011960).

Almost surely, 2^11877541865 is an apocalyptic number.

It is an amenable number.

11877541865 is a deficient number, since it is larger than the sum of its proper divisors (4954840855).

11877541865 is a wasteful number, since it uses less digits than its factorization.

11877541865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56481.

The product of its digits is 1881600, while the sum is 53.

The spelling of 11877541865 in words is "eleven billion, eight hundred seventy-seven million, five hundred forty-one thousand, eight hundred sixty-five".