26781734368 has 24 divisors (see below), whose sum is σ = 52767909432. Its totient is φ = 13380360576.

The previous prime is 26781734347. The next prime is 26781734377. The reversal of 26781734368 is 86343718762.

It is a super-2 number, since 2×26781734368² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

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, 286830 + ... + 368557.

It is an arithmetic number, because the mean of its divisors is an integer number (2198662893).

Almost surely, 2^26781734368 is an apocalyptic number.

It is an amenable number.

26781734368 is a deficient number, since it is larger than the sum of its proper divisors (25986175064).

26781734368 is a wasteful number, since it uses less digits than its factorization.

26781734368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656674 (or 656666 counting only the distinct ones).

The product of its digits is 8128512, while the sum is 55.

The spelling of 26781734368 in words is "twenty-six billion, seven hundred eighty-one million, seven hundred thirty-four thousand, three hundred sixty-eight".