11911883977 has 48 divisors (see below), whose sum is σ = 14776369920. Its totient is φ = 9554485248.

The previous prime is 11911883947. The next prime is 11911883983. The reversal of 11911883977 is 77938811911.

It is not a de Polignac number, because 11911883977 - 2⁷ = 11911883849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11911883947) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10330633 + ... + 10331785.

It is an arithmetic number, because the mean of its divisors is an integer number (307841040).

Almost surely, 2^11911883977 is an apocalyptic number.

It is an amenable number.

11911883977 is a deficient number, since it is larger than the sum of its proper divisors (2864485943).

11911883977 is a wasteful number, since it uses less digits than its factorization.

11911883977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1382 (or 1375 counting only the distinct ones).

The product of its digits is 762048, while the sum is 55.

The spelling of 11911883977 in words is "eleven billion, nine hundred eleven million, eight hundred eighty-three thousand, nine hundred seventy-seven".