11917921676 has 24 divisors (see below), whose sum is σ = 21244201776. Its totient is φ = 5848793280.

The previous prime is 11917921643. The next prime is 11917921699. The reversal of 11917921676 is 67612971911.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6035 + ... + 154506.

It is an arithmetic number, because the mean of its divisors is an integer number (885175074).

Almost surely, 2^11917921676 is an apocalyptic number.

It is an amenable number.

11917921676 is a deficient number, since it is larger than the sum of its proper divisors (9326280100).

11917921676 is a wasteful number, since it uses less digits than its factorization.

11917921676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160889 (or 160887 counting only the distinct ones).

The product of its digits is 285768, while the sum is 50.

The spelling of 11917921676 in words is "eleven billion, nine hundred seventeen million, nine hundred twenty-one thousand, six hundred seventy-six".