26830520663 has 8 divisors (see below), whose sum is σ = 27623047200. Its totient is φ = 26044571520.

The previous prime is 26830520621. The next prime is 26830520687. The reversal of 26830520663 is 36602503862.

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

It is a cyclic number.

It is not a de Polignac number, because 26830520663 - 2⁶ = 26830520599 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 26830520663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26830526663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1636070 + ... + 1652387.

It is an arithmetic number, because the mean of its divisors is an integer number (3452880900).

Almost surely, 2^26830520663 is an apocalyptic number.

26830520663 is a deficient number, since it is larger than the sum of its proper divisors (792526537).

26830520663 is a wasteful number, since it uses less digits than its factorization.

26830520663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3288697.

The product of its (nonzero) digits is 311040, while the sum is 41.

The spelling of 26830520663 in words is "twenty-six billion, eight hundred thirty million, five hundred twenty thousand, six hundred sixty-three".