2791938775117 has 2 divisors, whose sum is σ = 2791938775118. Its totient is φ = 2791938775116.

The previous prime is 2791938775103. The next prime is 2791938775181. The reversal of 2791938775117 is 7115778391972.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2780442861156 + 11495913961 = 1667466^2 + 107219^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2791938775117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2791938775217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1395969387558 + 1395969387559.

It is an arithmetic number, because the mean of its divisors is an integer number (1395969387559).

Almost surely, 2^{2791938775117} is an apocalyptic number.

It is an amenable number.

2791938775117 is a deficient number, since it is larger than the sum of its proper divisors (1).

2791938775117 is an equidigital number, since it uses as much as digits as its factorization.

2791938775117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46675440, while the sum is 67.

The spelling of 2791938775117 in words is "two trillion, seven hundred ninety-one billion, nine hundred thirty-eight million, seven hundred seventy-five thousand, one hundred seventeen".