26502637541 has 2 divisors, whose sum is σ = 26502637542. Its totient is φ = 26502637540.

The previous prime is 26502637481. The next prime is 26502637561. The reversal of 26502637541 is 14573620562.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21004415041 + 5498222500 = 144929^2 + 74150^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26502637541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26502637561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13251318770 + 13251318771.

It is an arithmetic number, because the mean of its divisors is an integer number (13251318771).

Almost surely, 2^26502637541 is an apocalyptic number.

It is an amenable number.

26502637541 is a deficient number, since it is larger than the sum of its proper divisors (1).

26502637541 is an equidigital number, since it uses as much as digits as its factorization.

26502637541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 302400, while the sum is 41.

The spelling of 26502637541 in words is "twenty-six billion, five hundred two million, six hundred thirty-seven thousand, five hundred forty-one".