26772314557 has 2 divisors, whose sum is σ = 26772314558. Its totient is φ = 26772314556.

The previous prime is 26772314549. The next prime is 26772314623. The reversal of 26772314557 is 75541327762.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26323764516 + 448550041 = 162246^2 + 21179^2 .

It is a cyclic number.

It is not a de Polignac number, because 26772314557 - 2³ = 26772314549 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 26772314557.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26772314057) 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, 13386157278 + 13386157279.

It is an arithmetic number, because the mean of its divisors is an integer number (13386157279).

Almost surely, 2^26772314557 is an apocalyptic number.

It is an amenable number.

26772314557 is a deficient number, since it is larger than the sum of its proper divisors (1).

26772314557 is an equidigital number, since it uses as much as digits as its factorization.

26772314557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2469600, while the sum is 49.

The spelling of 26772314557 in words is "twenty-six billion, seven hundred seventy-two million, three hundred fourteen thousand, five hundred fifty-seven".