11984891877 has 24 divisors (see below), whose sum is σ = 20825879360. Its totient is φ = 6488061120.

The previous prime is 11984891851. The next prime is 11984891879. The reversal of 11984891877 is 77819848911.

It is not a de Polignac number, because 11984891877 - 2¹² = 11984887781 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11984891879) 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, 5005024 + ... + 5007417.

Almost surely, 2^11984891877 is an apocalyptic number.

It is an amenable number.

11984891877 is a deficient number, since it is larger than the sum of its proper divisors (8840987483).

11984891877 is a wasteful number, since it uses less digits than its factorization.

11984891877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10012473 (or 10012470 counting only the distinct ones).

The product of its digits is 8128512, while the sum is 63.

The spelling of 11984891877 in words is "eleven billion, nine hundred eighty-four million, eight hundred ninety-one thousand, eight hundred seventy-seven".