26793515880 has 128 divisors (see below), whose sum is σ = 90102499200. Its totient is φ = 7081675776.

The previous prime is 26793515869. The next prime is 26793515887. The reversal of 26793515880 is 8851539762.

26793515880 is a `hidden beast` number, since 2 + 6 + 7 + 9 + 3 + 51 + 588 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (26793515887) 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, 12267 + ... + 231813.

It is an arithmetic number, because the mean of its divisors is an integer number (703925775).

Almost surely, 2^26793515880 is an apocalyptic number.

26793515880 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 26793515880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45051249600).

26793515880 is an abundant number, since it is smaller than the sum of its proper divisors (63308983320).

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

26793515880 is a wasteful number, since it uses less digits than its factorization.

26793515880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219680 (or 219670 counting only the distinct ones).

The product of its (nonzero) digits is 3628800, while the sum is 54.

The spelling of 26793515880 in words is "twenty-six billion, seven hundred ninety-three million, five hundred fifteen thousand, eight hundred eighty".