26573613361 has 2 divisors, whose sum is σ = 26573613362. Its totient is φ = 26573613360.

The previous prime is 26573613347. The next prime is 26573613371. The reversal of 26573613361 is 16331637562.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20357867761 + 6215745600 = 142681^2 + 78840^2 .

It is a cyclic number.

It is not a de Polignac number, because 26573613361 - 2¹⁹ = 26573089073 is a prime.

It is not a weakly prime, because it can be changed into another prime (26573613371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13286806680 + 13286806681.

It is an arithmetic number, because the mean of its divisors is an integer number (13286806681).

Almost surely, 2^26573613361 is an apocalyptic number.

It is an amenable number.

26573613361 is a deficient number, since it is larger than the sum of its proper divisors (1).

26573613361 is an equidigital number, since it uses as much as digits as its factorization.

26573613361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 408240, while the sum is 43.

The spelling of 26573613361 in words is "twenty-six billion, five hundred seventy-three million, six hundred thirteen thousand, three hundred sixty-one".