26801989556 has 12 divisors (see below), whose sum is σ = 46904628960. Its totient is φ = 13400667000.

The previous prime is 26801989553. The next prime is 26801989597. The reversal of 26801989556 is 65598910862.

It is a junction number, because it is equal to n+sod(n) for n = 26801989495 and 26801989504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26801989553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 269681 + ... + 355431.

It is an arithmetic number, because the mean of its divisors is an integer number (3908719080).

Almost surely, 2^26801989556 is an apocalyptic number.

It is an amenable number.

26801989556 is a deficient number, since it is larger than the sum of its proper divisors (20102639404).

26801989556 is a wasteful number, since it uses less digits than its factorization.

26801989556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163894 (or 163892 counting only the distinct ones).

The product of its (nonzero) digits is 9331200, while the sum is 59.

The spelling of 26801989556 in words is "twenty-six billion, eight hundred one million, nine hundred eighty-nine thousand, five hundred fifty-six".