26616828394 has 12 divisors (see below), whose sum is σ = 43232659686. Its totient is φ = 12284689872.

The previous prime is 26616828373. The next prime is 26616828443. The reversal of 26616828394 is 49382861662.

It can be written as a sum of positive squares in 3 ways, for example, as 5740335225 + 20876493169 = 75765^2 + 144487^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 39373669 + ... + 39374344.

Almost surely, 2^26616828394 is an apocalyptic number.

26616828394 is a deficient number, since it is larger than the sum of its proper divisors (16615831292).

26616828394 is a wasteful number, since it uses less digits than its factorization.

26616828394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78748041 (or 78748028 counting only the distinct ones).

The product of its digits is 5971968, while the sum is 55.

The spelling of 26616828394 in words is "twenty-six billion, six hundred sixteen million, eight hundred twenty-eight thousand, three hundred ninety-four".