26791137277 has 2 divisors, whose sum is σ = 26791137278. Its totient is φ = 26791137276.

The previous prime is 26791137221. The next prime is 26791137377. The reversal of 26791137277 is 77273119762.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23561943001 + 3229194276 = 153499^2 + 56826^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26791137277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26791137377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13395568638 + 13395568639.

It is an arithmetic number, because the mean of its divisors is an integer number (13395568639).

Almost surely, 2^26791137277 is an apocalyptic number.

It is an amenable number.

26791137277 is a deficient number, since it is larger than the sum of its proper divisors (1).

26791137277 is an equidigital number, since it uses as much as digits as its factorization.

26791137277 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1555848, while the sum is 52.

The spelling of 26791137277 in words is "twenty-six billion, seven hundred ninety-one million, one hundred thirty-seven thousand, two hundred seventy-seven".