26404020352 has 64 divisors (see below), whose sum is σ = 55109571840. Its totient is φ = 12585323520.

The previous prime is 26404020347. The next prime is 26404020389. The reversal of 26404020352 is 25302040462.

It is a tau number, because it is divible by the number of its divisors (64).

It is a self number, because there is not a number n which added to its sum of digits gives 26404020352.

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, 216198 + ... + 315514.

It is an arithmetic number, because the mean of its divisors is an integer number (861087060).

Almost surely, 2^26404020352 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26404020352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27554785920).

26404020352 is an abundant number, since it is smaller than the sum of its proper divisors (28705551488).

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

26404020352 is an equidigital number, since it uses as much as digits as its factorization.

26404020352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99429 (or 99417 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 28.

The spelling of 26404020352 in words is "twenty-six billion, four hundred four million, twenty thousand, three hundred fifty-two".