26660519424 has 480 divisors, whose sum is σ = 99276503040. Its totient is φ = 6683443200.

The previous prime is 26660519419. The next prime is 26660519471. The reversal of 26660519424 is 42491506662.

It is a self number, because there is not a number n which added to its sum of digits gives 26660519424.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10288369 + ... + 10290959.

It is an arithmetic number, because the mean of its divisors is an integer number (206826048).

Almost surely, 2^26660519424 is an apocalyptic number.

26660519424 is a gapful number since it is divisible by the number (24) 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 26660519424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49638251520).

26660519424 is an abundant number, since it is smaller than the sum of its proper divisors (72615983616).

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

26660519424 is a wasteful number, since it uses less digits than its factorization.

26660519424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2662 (or 2643 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 45.

The spelling of 26660519424 in words is "twenty-six billion, six hundred sixty million, five hundred nineteen thousand, four hundred twenty-four".