26515072541 has 2 divisors, whose sum is σ = 26515072542. Its totient is φ = 26515072540.

The previous prime is 26515072537. The next prime is 26515072553. The reversal of 26515072541 is 14527051562.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19419537316 + 7095535225 = 139354^2 + 84235^2 .

It is a cyclic number.

It is not a de Polignac number, because 26515072541 - 2² = 26515072537 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 26515072495 and 26515072504.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26515075541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13257536270 + 13257536271.

It is an arithmetic number, because the mean of its divisors is an integer number (13257536271).

Almost surely, 2^26515072541 is an apocalyptic number.

It is an amenable number.

26515072541 is a deficient number, since it is larger than the sum of its proper divisors (1).

26515072541 is an equidigital number, since it uses as much as digits as its factorization.

26515072541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84000, while the sum is 38.

The spelling of 26515072541 in words is "twenty-six billion, five hundred fifteen million, seventy-two thousand, five hundred forty-one".