26957641729 has 2 divisors, whose sum is σ = 26957641730. Its totient is φ = 26957641728.

The previous prime is 26957641723. The next prime is 26957641741. The reversal of 26957641729 is 92714675962.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17936441329 + 9021200400 = 133927^2 + 94980^2 .

It is a cyclic number.

It is not a de Polignac number, because 26957641729 - 2¹⁵ = 26957608961 is a prime.

It is not a weakly prime, because it can be changed into another prime (26957641723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13478820864 + 13478820865.

It is an arithmetic number, because the mean of its divisors is an integer number (13478820865).

Almost surely, 2^26957641729 is an apocalyptic number.

It is an amenable number.

26957641729 is a deficient number, since it is larger than the sum of its proper divisors (1).

26957641729 is an equidigital number, since it uses as much as digits as its factorization.

26957641729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11430720, while the sum is 58.

The spelling of 26957641729 in words is "twenty-six billion, nine hundred fifty-seven million, six hundred forty-one thousand, seven hundred twenty-nine".