1181979710117 has 16 divisors (see below), whose sum is σ = 1248330400128. Its totient is φ = 1116877903680.

The previous prime is 1181979710069. The next prime is 1181979710141. The reversal of 1181979710117 is 7110179791811.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1181979710117 - 2¹⁰ = 1181979709093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1181979710147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45919583 + ... + 45945315.

It is an arithmetic number, because the mean of its divisors is an integer number (78020650008).

Almost surely, 2^{1181979710117} is an apocalyptic number.

It is an amenable number.

1181979710117 is a deficient number, since it is larger than the sum of its proper divisors (66350690011).

1181979710117 is a wasteful number, since it uses less digits than its factorization.

1181979710117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49900.

The product of its (nonzero) digits is 222264, while the sum is 53.

The spelling of 1181979710117 in words is "one trillion, one hundred eighty-one billion, nine hundred seventy-nine million, seven hundred ten thousand, one hundred seventeen".