26949773768 has 16 divisors (see below), whose sum is σ = 51896524380. Its totient is φ = 13110700608.

The previous prime is 26949773729. The next prime is 26949773791. The reversal of 26949773768 is 86737794962.

It can be written as a sum of positive squares in 2 ways, for example, as 26949162244 + 611524 = 164162^2 + 782^2 .

It is a super-2 number, since 2×26949773768² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 26949773698 and 26949773707.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45522971 + ... + 45523562.

Almost surely, 2^26949773768 is an apocalyptic number.

It is an amenable number.

26949773768 is a deficient number, since it is larger than the sum of its proper divisors (24946750612).

26949773768 is a wasteful number, since it uses less digits than its factorization.

26949773768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91046576 (or 91046572 counting only the distinct ones).

The product of its digits is 192036096, while the sum is 68.

The spelling of 26949773768 in words is "twenty-six billion, nine hundred forty-nine million, seven hundred seventy-three thousand, seven hundred sixty-eight".