79782054117 has 16 divisors (see below), whose sum is σ = 107034721920. Its totient is φ = 52858840832.

The previous prime is 79782054073. The next prime is 79782054133. The reversal of 79782054117 is 71145028797.

It is a cyclic number.

It is not a de Polignac number, because 79782054117 - 2¹⁰ = 79782053093 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 79782054117.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79782054137) 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, 3037513 + ... + 3063665.

It is an arithmetic number, because the mean of its divisors is an integer number (6689670120).

Almost surely, 2^79782054117 is an apocalyptic number.

It is an amenable number.

79782054117 is a deficient number, since it is larger than the sum of its proper divisors (27252667803).

79782054117 is a wasteful number, since it uses less digits than its factorization.

79782054117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32412.

The product of its (nonzero) digits is 987840, while the sum is 51.

The spelling of 79782054117 in words is "seventy-nine billion, seven hundred eighty-two million, fifty-four thousand, one hundred seventeen".