26545430417761 has 2 divisors, whose sum is σ = 26545430417762. Its totient is φ = 26545430417760.

The previous prime is 26545430417677. The next prime is 26545430417809. The reversal of 26545430417761 is 16771403454562.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20989510007761 + 5555920410000 = 4581431^2 + 2357100^2 .

It is a cyclic number.

It is not a de Polignac number, because 26545430417761 - 2¹³ = 26545430409569 is a prime.

It is not a weakly prime, because it can be changed into another prime (26545430457761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13272715208880 + 13272715208881.

It is an arithmetic number, because the mean of its divisors is an integer number (13272715208881).

Almost surely, 2^{26545430417761} is an apocalyptic number.

It is an amenable number.

26545430417761 is a deficient number, since it is larger than the sum of its proper divisors (1).

26545430417761 is an equidigital number, since it uses as much as digits as its factorization.

26545430417761 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16934400, while the sum is 55.

The spelling of 26545430417761 in words is "twenty-six trillion, five hundred forty-five billion, four hundred thirty million, four hundred seventeen thousand, seven hundred sixty-one".