26402560901 has 2 divisors, whose sum is σ = 26402560902. Its totient is φ = 26402560900.

The previous prime is 26402560897. The next prime is 26402560909. The reversal of 26402560901 is 10906520462.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22839067876 + 3563493025 = 151126^2 + 59695^2 .

It is a cyclic number.

It is not a de Polignac number, because 26402560901 - 2² = 26402560897 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26402560909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13201280450 + 13201280451.

It is an arithmetic number, because the mean of its divisors is an integer number (13201280451).

Almost surely, 2^26402560901 is an apocalyptic number.

It is an amenable number.

26402560901 is a deficient number, since it is larger than the sum of its proper divisors (1).

26402560901 is an equidigital number, since it uses as much as digits as its factorization.

26402560901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 35.

The spelling of 26402560901 in words is "twenty-six billion, four hundred two million, five hundred sixty thousand, nine hundred one".