26646113880 has 192 divisors, whose sum is σ = 89120247840. Its totient is φ = 6899613696.

The previous prime is 26646113867. The next prime is 26646113927. The reversal of 26646113880 is 8831164662.

26646113880 is a `hidden beast` number, since 26 + 6 + 4 + 611 + 3 + 8 + 8 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7683907 + ... + 7687373.

Almost surely, 2^26646113880 is an apocalyptic number.

26646113880 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 26646113880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44560123920).

26646113880 is an abundant number, since it is smaller than the sum of its proper divisors (62474133960).

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

26646113880 is a wasteful number, since it uses less digits than its factorization.

26646113880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4098 (or 4091 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The spelling of 26646113880 in words is "twenty-six billion, six hundred forty-six million, one hundred thirteen thousand, eight hundred eighty".