26663362560 has 336 divisors, whose sum is σ = 93233687040. Its totient is φ = 7048396800.

The previous prime is 26663362459. The next prime is 26663362573. The reversal of 26663362560 is 6526336662.

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 23 ways as a sum of consecutive naturals, for example, 55664401 + ... + 55664879.

Almost surely, 2^26663362560 is an apocalyptic number.

26663362560 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 26663362560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46616843520).

26663362560 is an abundant number, since it is smaller than the sum of its proper divisors (66570324480).

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

26663362560 is a wasteful number, since it uses less digits than its factorization.

26663362560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 667 (or 640 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 45.

The spelling of 26663362560 in words is "twenty-six billion, six hundred sixty-three million, three hundred sixty-two thousand, five hundred sixty".