26761302505345 has 8 divisors (see below), whose sum is σ = 32318107994664. Its totient is φ = 21272678678784.

The previous prime is 26761302505307. The next prime is 26761302505361. The reversal of 26761302505345 is 54350520316762.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 38120219536 + 26723182285809 = 195244^2 + 5169447^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26761302505345 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17045414824 + ... + 17045416393.

It is an arithmetic number, because the mean of its divisors is an integer number (4039763499333).

Almost surely, 2^{26761302505345} is an apocalyptic number.

It is an amenable number.

26761302505345 is a deficient number, since it is larger than the sum of its proper divisors (5556805489319).

26761302505345 is a wasteful number, since it uses less digits than its factorization.

26761302505345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34090831379.

The product of its (nonzero) digits is 4536000, while the sum is 49.

The spelling of 26761302505345 in words is "twenty-six trillion, seven hundred sixty-one billion, three hundred two million, five hundred five thousand, three hundred forty-five".