26318447413 has 2 divisors, whose sum is σ = 26318447414. Its totient is φ = 26318447412.

The previous prime is 26318447381. The next prime is 26318447423. The reversal of 26318447413 is 31474481362.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25725914449 + 592532964 = 160393^2 + 24342^2 .

It is a cyclic number.

It is not a de Polignac number, because 26318447413 - 2⁵ = 26318447381 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 26318447413.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26318447423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13159223706 + 13159223707.

It is an arithmetic number, because the mean of its divisors is an integer number (13159223707).

Almost surely, 2^26318447413 is an apocalyptic number.

It is an amenable number.

26318447413 is a deficient number, since it is larger than the sum of its proper divisors (1).

26318447413 is an equidigital number, since it uses as much as digits as its factorization.

26318447413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 387072, while the sum is 43.

The spelling of 26318447413 in words is "twenty-six billion, three hundred eighteen million, four hundred forty-seven thousand, four hundred thirteen".