26820985056 has 48 divisors (see below), whose sum is σ = 72307935504. Its totient is φ = 8698696704.

The previous prime is 26820985043. The next prime is 26820985073. The reversal of 26820985056 is 65058902862.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3771925 + ... + 3779028.

It is an arithmetic number, because the mean of its divisors is an integer number (1506415323).

Almost surely, 2^26820985056 is an apocalyptic number.

It is an amenable number.

26820985056 is an abundant number, since it is smaller than the sum of its proper divisors (45486950448).

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

26820985056 is a wasteful number, since it uses less digits than its factorization.

26820985056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7551003 (or 7550995 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 51.

The spelling of 26820985056 in words is "twenty-six billion, eight hundred twenty million, nine hundred eighty-five thousand, fifty-six".