26645790240 has 192 divisors, whose sum is σ = 93367209600. Its totient is φ = 7097398272.

The previous prime is 26645790233. The next prime is 26645790253. The reversal of 26645790240 is 4209754662.

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4399054 + ... + 4405106.

It is an arithmetic number, because the mean of its divisors is an integer number (486287550).

Almost surely, 2^26645790240 is an apocalyptic number.

26645790240 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 26645790240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46683604800).

26645790240 is an abundant number, since it is smaller than the sum of its proper divisors (66721419360).

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

26645790240 is a wasteful number, since it uses less digits than its factorization.

26645790240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7096 (or 7082 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 45.

The spelling of 26645790240 in words is "twenty-six billion, six hundred forty-five million, seven hundred ninety thousand, two hundred forty".