26005445074640 has 40 divisors (see below), whose sum is σ = 60573194927520. Its totient is φ = 10383161233536.

The previous prime is 26005445074613. The next prime is 26005445074649. The reversal of 26005445074640 is 4647054450062.

It is a happy number.

26005445074640 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×26005445074640² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26005445074649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 297093410 + ... + 297180929.

It is an arithmetic number, because the mean of its divisors is an integer number (1514329873188).

Almost surely, 2^{26005445074640} is an apocalyptic number.

26005445074640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26005445074640 is an abundant number, since it is smaller than the sum of its proper divisors (34567749852880).

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

26005445074640 is a wasteful number, since it uses less digits than its factorization.

26005445074640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 594274899 (or 594274893 counting only the distinct ones).

The product of its (nonzero) digits is 3225600, while the sum is 47.

The spelling of 26005445074640 in words is "twenty-six trillion, five billion, four hundred forty-five million, seventy-four thousand, six hundred forty".