26698243026 has 128 divisors (see below), whose sum is σ = 68261953536. Its totient is φ = 6771651840.

The previous prime is 26698242947. The next prime is 26698243037. The reversal of 26698243026 is 62034289662.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2754100 + ... + 2763776.

It is an arithmetic number, because the mean of its divisors is an integer number (533296512).

Almost surely, 2^26698243026 is an apocalyptic number.

26698243026 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 26698243026, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34130976768).

26698243026 is an abundant number, since it is smaller than the sum of its proper divisors (41563710510).

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

26698243026 is a wasteful number, since it uses less digits than its factorization.

26698243026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9896.

The product of its (nonzero) digits is 1492992, while the sum is 48.

The spelling of 26698243026 in words is "twenty-six billion, six hundred ninety-eight million, two hundred forty-three thousand, twenty-six".