26680351593 has 48 divisors (see below), whose sum is σ = 42700207488. Its totient is φ = 14511571200.

The previous prime is 26680351583. The next prime is 26680351609. The reversal of 26680351593 is 39515308662.

It is not a de Polignac number, because 26680351593 - 2⁸ = 26680351337 is a prime.

It is a super-2 number, since 2×26680351593² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (26680351583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1220205 + ... + 1241877.

It is an arithmetic number, because the mean of its divisors is an integer number (889587656).

Almost surely, 2^26680351593 is an apocalyptic number.

It is an amenable number.

26680351593 is a deficient number, since it is larger than the sum of its proper divisors (16019855895).

26680351593 is a wasteful number, since it uses less digits than its factorization.

26680351593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21806 (or 21775 counting only the distinct ones).

The product of its (nonzero) digits is 1166400, while the sum is 48.

The spelling of 26680351593 in words is "twenty-six billion, six hundred eighty million, three hundred fifty-one thousand, five hundred ninety-three".