26385597798 has 64 divisors (see below), whose sum is σ = 62196387840. Its totient is φ = 7306538400.

The previous prime is 26385597793. The next prime is 26385597817. The reversal of 26385597798 is 89779558362.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26385597793) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 100953 + ... + 250923.

It is an arithmetic number, because the mean of its divisors is an integer number (971818560).

Almost surely, 2^26385597798 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26385597798, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31098193920).

26385597798 is an abundant number, since it is smaller than the sum of its proper divisors (35810790042).

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

26385597798 is a wasteful number, since it uses less digits than its factorization.

26385597798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150113.

The product of its digits is 228614400, while the sum is 69.

The spelling of 26385597798 in words is "twenty-six billion, three hundred eighty-five million, five hundred ninety-seven thousand, seven hundred ninety-eight".