26908081613 has 16 divisors (see below), whose sum is σ = 31593934464. Its totient is φ = 22433112000.

The previous prime is 26908081601. The next prime is 26908081667. The reversal of 26908081613 is 31618080962.

It is a cyclic number.

It is not a de Polignac number, because 26908081613 - 2⁴ = 26908081597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26908080613) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 826031 + ... + 857987.

It is an arithmetic number, because the mean of its divisors is an integer number (1974620904).

Almost surely, 2^26908081613 is an apocalyptic number.

It is an amenable number.

26908081613 is a deficient number, since it is larger than the sum of its proper divisors (4685852851).

26908081613 is a wasteful number, since it uses less digits than its factorization.

26908081613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35252.

The product of its (nonzero) digits is 124416, while the sum is 44.

The spelling of 26908081613 in words is "twenty-six billion, nine hundred eight million, eighty-one thousand, six hundred thirteen".