11691277889 has 8 divisors (see below), whose sum is σ = 11758417920. Its totient is φ = 11624200000.

The previous prime is 11691277883. The next prime is 11691277891. The reversal of 11691277889 is 98877219611.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11691277889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11691277883) 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, 392264 + ... + 421014.

It is an arithmetic number, because the mean of its divisors is an integer number (1469802240).

Almost surely, 2^11691277889 is an apocalyptic number.

It is an amenable number.

11691277889 is a deficient number, since it is larger than the sum of its proper divisors (67140031).

11691277889 is a wasteful number, since it uses less digits than its factorization.

11691277889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31071.

The product of its digits is 3048192, while the sum is 59.

The spelling of 11691277889 in words is "eleven billion, six hundred ninety-one million, two hundred seventy-seven thousand, eight hundred eighty-nine".