26847237589991 has 24 divisors (see below), whose sum is σ = 33633834212160. Its totient is φ = 21241119195072.

The previous prime is 26847237589987. The next prime is 26847237589993. The reversal of 26847237589991 is 19998573274862.

It is not a de Polignac number, because 26847237589991 - 2² = 26847237589987 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26847237589993) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20701925 + ... + 21960513.

It is an arithmetic number, because the mean of its divisors is an integer number (1401409758840).

Almost surely, 2^{26847237589991} is an apocalyptic number.

26847237589991 is a deficient number, since it is larger than the sum of its proper divisors (6786596622169).

26847237589991 is a wasteful number, since it uses less digits than its factorization.

26847237589991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1292103 (or 1292096 counting only the distinct ones).

The product of its digits is 3292047360, while the sum is 80.

The spelling of 26847237589991 in words is "twenty-six trillion, eight hundred forty-seven billion, two hundred thirty-seven million, five hundred eighty-nine thousand, nine hundred ninety-one".