26198604020 has 48 divisors (see below), whose sum is σ = 57622803840. Its totient is φ = 9986503296.

The previous prime is 26198604011. The next prime is 26198604041. The reversal of 26198604020 is 2040689162.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17879 + ... + 229601.

It is an arithmetic number, because the mean of its divisors is an integer number (1200475080).

Almost surely, 2^26198604020 is an apocalyptic number.

26198604020 is a gapful number since it is divisible by the number (20) 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 26198604020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28811401920).

26198604020 is an abundant number, since it is smaller than the sum of its proper divisors (31424199820).

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

26198604020 is a wasteful number, since it uses less digits than its factorization.

26198604020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212024 (or 212022 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 38.

The spelling of 26198604020 in words is "twenty-six billion, one hundred ninety-eight million, six hundred four thousand, twenty".