26320128457 has 8 divisors (see below), whose sum is σ = 30460908800. Its totient is φ = 22274538624.

The previous prime is 26320128427. The next prime is 26320128469. The reversal of 26320128457 is 75482102362.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26320128457 is a prime.

It is not an unprimeable number, because it can be changed into a prime (26320128427) 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, 23797032 + ... + 23798137.

It is an arithmetic number, because the mean of its divisors is an integer number (3807613600).

Almost surely, 2^26320128457 is an apocalyptic number.

It is an amenable number.

26320128457 is a deficient number, since it is larger than the sum of its proper divisors (4140780343).

26320128457 is an equidigital number, since it uses as much as digits as its factorization.

26320128457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47595255.

The product of its (nonzero) digits is 161280, while the sum is 40.

The spelling of 26320128457 in words is "twenty-six billion, three hundred twenty million, one hundred twenty-eight thousand, four hundred fifty-seven".