26557450560 has 336 divisors, whose sum is σ = 95192697600. Its totient is φ = 7047419904.

The previous prime is 26557450537. The next prime is 26557450561. The reversal of 26557450560 is 6505475562.

26557450560 is a `hidden beast` number, since 2 + 6 + 557 + 45 + 0 + 56 + 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 not an unprimeable number, because it can be changed into a prime (26557450561) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 18583926 + ... + 18585354.

It is an arithmetic number, because the mean of its divisors is an integer number (283311600).

Almost surely, 2^26557450560 is an apocalyptic number.

26557450560 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 26557450560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47596348800).

26557450560 is an abundant number, since it is smaller than the sum of its proper divisors (68635247040).

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

26557450560 is a wasteful number, since it uses less digits than its factorization.

26557450560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1700 (or 1678 counting only the distinct ones).

The product of its (nonzero) digits is 1260000, while the sum is 45.

The spelling of 26557450560 in words is "twenty-six billion, five hundred fifty-seven million, four hundred fifty thousand, five hundred sixty".