26712261361 has 2 divisors, whose sum is σ = 26712261362. Its totient is φ = 26712261360.

The previous prime is 26712261353. The next prime is 26712261371. The reversal of 26712261361 is 16316221762.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21110637025 + 5601624336 = 145295^2 + 74844^2 .

It is a cyclic number.

It is not a de Polignac number, because 26712261361 - 2³ = 26712261353 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 26712261361.

It is not a weakly prime, because it can be changed into another prime (26712261371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13356130680 + 13356130681.

It is an arithmetic number, because the mean of its divisors is an integer number (13356130681).

Almost surely, 2^26712261361 is an apocalyptic number.

It is an amenable number.

26712261361 is a deficient number, since it is larger than the sum of its proper divisors (1).

26712261361 is an equidigital number, since it uses as much as digits as its factorization.

26712261361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 37.

The spelling of 26712261361 in words is "twenty-six billion, seven hundred twelve million, two hundred sixty-one thousand, three hundred sixty-one".