26506042913439 has 72 divisors (see below), whose sum is σ = 41682165457920. Its totient is φ = 16185624366240.

The previous prime is 26506042913431. The next prime is 26506042913459. The reversal of 26506042913439 is 93431924060562.

26506042913439 is a `hidden beast` number, since 2 + 6 + 5 + 0 + 6 + 0 + 4 + 291 + 343 + 9 = 666.

It is not a de Polignac number, because 26506042913439 - 2³ = 26506042913431 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26506042913431) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 178553604 + ... + 178701990.

Almost surely, 2^{26506042913439} is an apocalyptic number.

26506042913439 is a deficient number, since it is larger than the sum of its proper divisors (15176122544481).

26506042913439 is a wasteful number, since it uses less digits than its factorization.

26506042913439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149561 (or 149527 counting only the distinct ones).

The product of its (nonzero) digits is 8398080, while the sum is 54.

The spelling of 26506042913439 in words is "twenty-six trillion, five hundred six billion, forty-two million, nine hundred thirteen thousand, four hundred thirty-nine".