11704171978 has 16 divisors (see below), whose sum is σ = 18232679520. Its totient is φ = 5630674896.

The previous prime is 11704171957. The next prime is 11704171981. The reversal of 11704171978 is 87917140711.

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, 1009873 + ... + 1021396.

It is an arithmetic number, because the mean of its divisors is an integer number (1139542470).

Almost surely, 2^11704171978 is an apocalyptic number.

11704171978 is a deficient number, since it is larger than the sum of its proper divisors (6528507542).

11704171978 is a wasteful number, since it uses less digits than its factorization.

11704171978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2031381.

The product of its (nonzero) digits is 98784, while the sum is 46.

The spelling of 11704171978 in words is "eleven billion, seven hundred four million, one hundred seventy-one thousand, nine hundred seventy-eight".