26639514539 has 24 divisors (see below), whose sum is σ = 31114887168. Its totient is φ = 22613351040.

The previous prime is 26639514481. The next prime is 26639514557. The reversal of 26639514539 is 93541593662.

It is not a de Polignac number, because 26639514539 - 2²⁰ = 26638465963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26639514599) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 370742 + ... + 436724.

It is an arithmetic number, because the mean of its divisors is an integer number (1296453632).

Almost surely, 2^26639514539 is an apocalyptic number.

26639514539 is a deficient number, since it is larger than the sum of its proper divisors (4475372629).

26639514539 is a wasteful number, since it uses less digits than its factorization.

26639514539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66155 (or 66138 counting only the distinct ones).

The product of its digits is 5248800, while the sum is 53.

The spelling of 26639514539 in words is "twenty-six billion, six hundred thirty-nine million, five hundred fourteen thousand, five hundred thirty-nine".