26643385626 has 256 divisors, whose sum is σ = 70416138240. Its totient is φ = 6584094720.

The previous prime is 26643385619. The next prime is 26643385649. The reversal of 26643385626 is 62658334662.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 35195640 + ... + 35196396.

It is an arithmetic number, because the mean of its divisors is an integer number (275063040).

Almost surely, 2^26643385626 is an apocalyptic number.

26643385626 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 26643385626, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35208069120).

26643385626 is an abundant number, since it is smaller than the sum of its proper divisors (43772752614).

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

26643385626 is a wasteful number, since it uses less digits than its factorization.

26643385626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 949.

The product of its digits is 7464960, while the sum is 51.

The spelling of 26643385626 in words is "twenty-six billion, six hundred forty-three million, three hundred eighty-five thousand, six hundred twenty-six".