26515467401 has 2 divisors, whose sum is σ = 26515467402. Its totient is φ = 26515467400.

The previous prime is 26515467383. The next prime is 26515467403. The reversal of 26515467401 is 10476451562.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14664967801 + 11850499600 = 121099^2 + 108860^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26515467401 is a prime.

It is a super-2 number, since 2×26515467401² (a number of 22 digits) contains 22 as substring.

Together with 26515467403, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (26515467403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13257733700 + 13257733701.

It is an arithmetic number, because the mean of its divisors is an integer number (13257733701).

Almost surely, 2^26515467401 is an apocalyptic number.

It is an amenable number.

26515467401 is a deficient number, since it is larger than the sum of its proper divisors (1).

26515467401 is an equidigital number, since it uses as much as digits as its factorization.

26515467401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 201600, while the sum is 41.

The spelling of 26515467401 in words is "twenty-six billion, five hundred fifteen million, four hundred sixty-seven thousand, four hundred one".