26109872556 has 24 divisors (see below), whose sum is σ = 61331919600. Its totient is φ = 8644878912.

The previous prime is 26109872539. The next prime is 26109872563. The reversal of 26109872556 is 65527890162.

It is a junction number, because it is equal to n+sod(n) for n = 26109872499 and 26109872508.

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 7 ways as a sum of consecutive naturals, for example, 7299631 + ... + 7303206.

It is an arithmetic number, because the mean of its divisors is an integer number (2555496650).

Almost surely, 2^26109872556 is an apocalyptic number.

It is an amenable number.

26109872556 is an abundant number, since it is smaller than the sum of its proper divisors (35222047044).

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

26109872556 is a wasteful number, since it uses less digits than its factorization.

26109872556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14602993 (or 14602991 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 51.

The spelling of 26109872556 in words is "twenty-six billion, one hundred nine million, eight hundred seventy-two thousand, five hundred fifty-six".