26405449360919 has 4 divisors (see below), whose sum is σ = 26580319886640. Its totient is φ = 26230578835200.

The previous prime is 26405449360909. The next prime is 26405449360931. The reversal of 26405449360919 is 91906394450462.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26405449360919 is a prime.

It is a super-2 number, since 2×26405449360919² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26405449360909) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87435262634 + ... + 87435262935.

It is an arithmetic number, because the mean of its divisors is an integer number (6645079971660).

Almost surely, 2^{26405449360919} is an apocalyptic number.

26405449360919 is a deficient number, since it is larger than the sum of its proper divisors (174870525721).

26405449360919 is a wasteful number, since it uses less digits than its factorization.

26405449360919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174870525720.

The product of its (nonzero) digits is 50388480, while the sum is 62.

The spelling of 26405449360919 in words is "twenty-six trillion, four hundred five billion, four hundred forty-nine million, three hundred sixty thousand, nine hundred nineteen".