11891399276 has 12 divisors (see below), whose sum is σ = 20930238672. Its totient is φ = 5911331088.

The previous prime is 11891399263. The next prime is 11891399291. The reversal of 11891399276 is 67299319811.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8591360 + ... + 8592743.

It is an arithmetic number, because the mean of its divisors is an integer number (1744186556).

Almost surely, 2^11891399276 is an apocalyptic number.

It is an amenable number.

11891399276 is a deficient number, since it is larger than the sum of its proper divisors (9038839396).

11891399276 is a wasteful number, since it uses less digits than its factorization.

11891399276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17184280 (or 17184278 counting only the distinct ones).

The product of its digits is 1469664, while the sum is 56.

The spelling of 11891399276 in words is "eleven billion, eight hundred ninety-one million, three hundred ninety-nine thousand, two hundred seventy-six".