26871999264 has 192 divisors, whose sum is σ = 86465232000. Its totient is φ = 8051281920.

The previous prime is 26871999223. The next prime is 26871999289. The reversal of 26871999264 is 46299917862.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 829972 + ... + 861740.

It is an arithmetic number, because the mean of its divisors is an integer number (450339750).

Almost surely, 2^26871999264 is an apocalyptic number.

26871999264 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26871999264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43232616000).

26871999264 is an abundant number, since it is smaller than the sum of its proper divisors (59593232736).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26871999264 is a wasteful number, since it uses less digits than its factorization.

26871999264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31888 (or 31874 counting only the distinct ones).

The product of its digits is 23514624, while the sum is 63.

The spelling of 26871999264 in words is "twenty-six billion, eight hundred seventy-one million, nine hundred ninety-nine thousand, two hundred sixty-four".