26539323077 has 2 divisors, whose sum is σ = 26539323078. Its totient is φ = 26539323076.

The previous prime is 26539323073. The next prime is 26539323091. The reversal of 26539323077 is 77032393562.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26473242436 + 66080641 = 162706^2 + 8129^2 .

It is a cyclic number.

It is not a de Polignac number, because 26539323077 - 2² = 26539323073 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26539323071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13269661538 + 13269661539.

It is an arithmetic number, because the mean of its divisors is an integer number (13269661539).

Almost surely, 2^26539323077 is an apocalyptic number.

It is an amenable number.

26539323077 is a deficient number, since it is larger than the sum of its proper divisors (1).

26539323077 is an equidigital number, since it uses as much as digits as its factorization.

26539323077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1428840, while the sum is 47.

The spelling of 26539323077 in words is "twenty-six billion, five hundred thirty-nine million, three hundred twenty-three thousand, seventy-seven".