26451560519 has 2 divisors, whose sum is σ = 26451560520. Its totient is φ = 26451560518.

The previous prime is 26451560497. The next prime is 26451560521. The reversal of 26451560519 is 91506515462.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26451560519 - 2¹² = 26451556423 is a prime.

It is a super-2 number, since 2×26451560519² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

Together with 26451560521, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 26451560519.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26451560119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13225780259 + 13225780260.

It is an arithmetic number, because the mean of its divisors is an integer number (13225780260).

Almost surely, 2^26451560519 is an apocalyptic number.

26451560519 is a deficient number, since it is larger than the sum of its proper divisors (1).

26451560519 is an equidigital number, since it uses as much as digits as its factorization.

26451560519 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324000, while the sum is 44.

The spelling of 26451560519 in words is "twenty-six billion, four hundred fifty-one million, five hundred sixty thousand, five hundred nineteen".