11979249905194 has 32 divisors (see below), whose sum is σ = 21116300929920. Its totient is φ = 5024826705600.

The previous prime is 11979249905123. The next prime is 11979249905209. The reversal of 11979249905194 is 49150994297911.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4960749 + ... + 6969040.

It is an arithmetic number, because the mean of its divisors is an integer number (659884404060).

Almost surely, 2^{11979249905194} is an apocalyptic number.

11979249905194 is a deficient number, since it is larger than the sum of its proper divisors (9137051024726).

11979249905194 is a wasteful number, since it uses less digits than its factorization.

11979249905194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11933326.

The product of its (nonzero) digits is 66134880, while the sum is 70.

The spelling of 11979249905194 in words is "eleven trillion, nine hundred seventy-nine billion, two hundred forty-nine million, nine hundred five thousand, one hundred ninety-four".