26821568480 has 48 divisors (see below), whose sum is σ = 72418237920. Its totient is φ = 9195965952.

The previous prime is 26821568479. The next prime is 26821568483. The reversal of 26821568480 is 8486512862.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26821568483) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11972795 + ... + 11975034.

It is an arithmetic number, because the mean of its divisors is an integer number (1508713290).

Almost surely, 2^26821568480 is an apocalyptic number.

26821568480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26821568480 is an abundant number, since it is smaller than the sum of its proper divisors (45596669440).

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

26821568480 is a wasteful number, since it uses less digits than its factorization.

26821568480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23947851 (or 23947843 counting only the distinct ones).

The product of its (nonzero) digits is 1474560, while the sum is 50.

The spelling of 26821568480 in words is "twenty-six billion, eight hundred twenty-one million, five hundred sixty-eight thousand, four hundred eighty".