26581482920 has 16 divisors (see below), whose sum is σ = 59808336660. Its totient is φ = 10632593152.

The previous prime is 26581482887. The next prime is 26581482937. The reversal of 26581482920 is 2928418562.

It can be written as a sum of positive squares in 2 ways, for example, as 26367913924 + 213568996 = 162382^2 + 14614^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 332268497 + ... + 332268576.

Almost surely, 2^26581482920 is an apocalyptic number.

26581482920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26581482920 is an abundant number, since it is smaller than the sum of its proper divisors (33226853740).

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

26581482920 is a wasteful number, since it uses less digits than its factorization.

26581482920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 664537084 (or 664537080 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 47.

The spelling of 26581482920 in words is "twenty-six billion, five hundred eighty-one million, four hundred eighty-two thousand, nine hundred twenty".