26680340972 has 6 divisors (see below), whose sum is σ = 46690596708. Its totient is φ = 13340170484.

The previous prime is 26680340893. The next prime is 26680340977. The reversal of 26680340972 is 27904308662.

It is not an unprimeable number, because it can be changed into a prime (26680340977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3335042618 + ... + 3335042625.

It is an arithmetic number, because the mean of its divisors is an integer number (7781766118).

Almost surely, 2^26680340972 is an apocalyptic number.

It is an amenable number.

26680340972 is a deficient number, since it is larger than the sum of its proper divisors (20010255736).

26680340972 is a wasteful number, since it uses less digits than its factorization.

26680340972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6670085247 (or 6670085245 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 47.

The spelling of 26680340972 in words is "twenty-six billion, six hundred eighty million, three hundred forty thousand, nine hundred seventy-two".