26229317620 has 144 divisors (see below), whose sum is σ = 63012225024. Its totient is φ = 9154252800.

The previous prime is 26229317591. The next prime is 26229317627. The reversal of 26229317620 is 2671392262.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26229317627) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9526164 + ... + 9528916.

It is an arithmetic number, because the mean of its divisors is an integer number (437584896).

Almost surely, 2^26229317620 is an apocalyptic number.

26229317620 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 26229317620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31506112512).

26229317620 is an abundant number, since it is smaller than the sum of its proper divisors (36782907404).

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

26229317620 is a wasteful number, since it uses less digits than its factorization.

26229317620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2942 (or 2929 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 40.

The spelling of 26229317620 in words is "twenty-six billion, two hundred twenty-nine million, three hundred seventeen thousand, six hundred twenty".