26660213300761 has 2 divisors, whose sum is σ = 26660213300762. Its totient is φ = 26660213300760.

The previous prime is 26660213300737. The next prime is 26660213300909. The reversal of 26660213300761 is 16700331206662.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23417314652736 + 3242898648025 = 4839144^2 + 1800805^2 .

It is a cyclic number.

It is not a de Polignac number, because 26660213300761 - 2¹¹ = 26660213298713 is a prime.

It is not a weakly prime, because it can be changed into another prime (26660213360761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13330106650380 + 13330106650381.

It is an arithmetic number, because the mean of its divisors is an integer number (13330106650381).

Almost surely, 2^{26660213300761} is an apocalyptic number.

It is an amenable number.

26660213300761 is a deficient number, since it is larger than the sum of its proper divisors (1).

26660213300761 is an equidigital number, since it uses as much as digits as its factorization.

26660213300761 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 326592, while the sum is 43.

The spelling of 26660213300761 in words is "twenty-six trillion, six hundred sixty billion, two hundred thirteen million, three hundred thousand, seven hundred sixty-one".