26398552308720 has 160 divisors (see below), whose sum is σ = 86656601604672. Its totient is φ = 6624965738496.

The previous prime is 26398552308683. The next prime is 26398552308731. The reversal of 26398552308720 is 2780325589362.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (60).

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 31 ways as a sum of consecutive naturals, for example, 49728214 + ... + 50256266.

Almost surely, 2^{26398552308720} is an apocalyptic number.

26398552308720 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 26398552308720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43328300802336).

26398552308720 is an abundant number, since it is smaller than the sum of its proper divisors (60258049295952).

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

26398552308720 is a wasteful number, since it uses less digits than its factorization.

26398552308720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540339 (or 540333 counting only the distinct ones).

The product of its (nonzero) digits is 43545600, while the sum is 60.

The spelling of 26398552308720 in words is "twenty-six trillion, three hundred ninety-eight billion, five hundred fifty-two million, three hundred eight thousand, seven hundred twenty".