117012171506779 has 16 divisors (see below), whose sum is σ = 123733218960000. Its totient is φ = 110474504429184.

The previous prime is 117012171506767. The next prime is 117012171506831. The reversal of 117012171506779 is 977605171210711.

It is a cyclic number.

It is not a de Polignac number, because 117012171506779 - 2²⁹ = 117011634635867 is a prime.

It is not an unprimeable number, because it can be changed into a prime (117012171506729) 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, 36905904 + ... + 39950845.

It is an arithmetic number, because the mean of its divisors is an integer number (7733326185000).

Almost surely, 2^{117012171506779} is an apocalyptic number.

117012171506779 is a deficient number, since it is larger than the sum of its proper divisors (6721047453221).

117012171506779 is a wasteful number, since it uses less digits than its factorization.

117012171506779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76857942.

The product of its (nonzero) digits is 1296540, while the sum is 55.

The spelling of 117012171506779 in words is "one hundred seventeen trillion, twelve billion, one hundred seventy-one million, five hundred six thousand, seven hundred seventy-nine".