11978932236 has 12 divisors (see below), whose sum is σ = 27950841912. Its totient is φ = 3992977408.

The previous prime is 11978932219. The next prime is 11978932247. The reversal of 11978932236 is 63223987911.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 499122165 + ... + 499122188.

It is an arithmetic number, because the mean of its divisors is an integer number (2329236826).

Almost surely, 2^11978932236 is an apocalyptic number.

It is an amenable number.

11978932236 is an abundant number, since it is smaller than the sum of its proper divisors (15971909676).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11978932236 is a wasteful number, since it uses less digits than its factorization.

11978932236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 998244360 (or 998244358 counting only the distinct ones).

The product of its digits is 979776, while the sum is 51.

The spelling of 11978932236 in words is "eleven billion, nine hundred seventy-eight million, nine hundred thirty-two thousand, two hundred thirty-six".