121716902319194 has 64 divisors (see below), whose sum is σ = 238171290561792. Its totient is φ = 45272612275200.

The previous prime is 121716902319191. The next prime is 121716902319263. The reversal of 121716902319194 is 491913209617121.

It is not an unprimeable number, because it can be changed into a prime (121716902319191) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17253017 + ... + 23261564.

It is an arithmetic number, because the mean of its divisors is an integer number (3721426415028).

Almost surely, 2^{121716902319194} is an apocalyptic number.

121716902319194 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

121716902319194 is a deficient number, since it is larger than the sum of its proper divisors (116454388242598).

121716902319194 is a wasteful number, since it uses less digits than its factorization.

121716902319194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40515591.

The product of its (nonzero) digits is 1469664, while the sum is 56.

The spelling of 121716902319194 in words is "one hundred twenty-one trillion, seven hundred sixteen billion, nine hundred two million, three hundred nineteen thousand, one hundred ninety-four".