72794159117 has 2 divisors, whose sum is σ = 72794159118. Its totient is φ = 72794159116.

The previous prime is 72794159101. The next prime is 72794159147. The reversal of 72794159117 is 71195149727.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71848658116 + 945501001 = 268046^2 + 30749^2 .

It is a cyclic number.

It is not a de Polignac number, because 72794159117 - 2⁴ = 72794159101 is a prime.

It is a super-2 number, since 2×72794159117² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72794159147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36397079558 + 36397079559.

It is an arithmetic number, because the mean of its divisors is an integer number (36397079559).

Almost surely, 2^72794159117 is an apocalyptic number.

It is an amenable number.

72794159117 is a deficient number, since it is larger than the sum of its proper divisors (1).

72794159117 is an equidigital number, since it uses as much as digits as its factorization.

72794159117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1111320, while the sum is 53.

The spelling of 72794159117 in words is "seventy-two billion, seven hundred ninety-four million, one hundred fifty-nine thousand, one hundred seventeen".