26456471761 has 2 divisors, whose sum is σ = 26456471762. Its totient is φ = 26456471760.

The previous prime is 26456471753. The next prime is 26456471779. The reversal of 26456471761 is 16717465462.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24069660736 + 2386811025 = 155144^2 + 48855^2 .

It is a cyclic number.

It is not a de Polignac number, because 26456471761 - 2³ = 26456471753 is a prime.

It is a super-2 number, since 2×26456471761² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (26456471861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13228235880 + 13228235881.

It is an arithmetic number, because the mean of its divisors is an integer number (13228235881).

Almost surely, 2^26456471761 is an apocalyptic number.

It is an amenable number.

26456471761 is a deficient number, since it is larger than the sum of its proper divisors (1).

26456471761 is an equidigital number, since it uses as much as digits as its factorization.

26456471761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1693440, while the sum is 49.

The spelling of 26456471761 in words is "twenty-six billion, four hundred fifty-six million, four hundred seventy-one thousand, seven hundred sixty-one".