11981116277 has 24 divisors (see below), whose sum is σ = 13689961824. Its totient is φ = 10420353504.

The previous prime is 11981116267. The next prime is 11981116319. The reversal of 11981116277 is 77261118911.

It is not a de Polignac number, because 11981116277 - 2¹⁰ = 11981115253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11981116207) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 447758 + ... + 473760.

It is an arithmetic number, because the mean of its divisors is an integer number (570415076).

Almost surely, 2^11981116277 is an apocalyptic number.

It is an amenable number.

11981116277 is a deficient number, since it is larger than the sum of its proper divisors (1708845547).

11981116277 is a wasteful number, since it uses less digits than its factorization.

11981116277 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26129 (or 26106 counting only the distinct ones).

The product of its digits is 42336, while the sum is 44.

The spelling of 11981116277 in words is "eleven billion, nine hundred eighty-one million, one hundred sixteen thousand, two hundred seventy-seven".