26240532613 has 2 divisors, whose sum is σ = 26240532614. Its totient is φ = 26240532612.

The previous prime is 26240532599. The next prime is 26240532653. The reversal of 26240532613 is 31623504262.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24843118689 + 1397413924 = 157617^2 + 37382^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26240532613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26240532653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13120266306 + 13120266307.

It is an arithmetic number, because the mean of its divisors is an integer number (13120266307).

Almost surely, 2^26240532613 is an apocalyptic number.

It is an amenable number.

26240532613 is a deficient number, since it is larger than the sum of its proper divisors (1).

26240532613 is an equidigital number, since it uses as much as digits as its factorization.

26240532613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51840, while the sum is 34.

The spelling of 26240532613 in words is "twenty-six billion, two hundred forty million, five hundred thirty-two thousand, six hundred thirteen".