26016820530 has 64 divisors (see below), whose sum is σ = 65440085760. Its totient is φ = 6607155456.

The previous prime is 26016820493. The next prime is 26016820579. The reversal of 26016820530 is 3502861062.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 26016820491 and 26016820500.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 75684 + ... + 240336.

It is an arithmetic number, because the mean of its divisors is an integer number (1022501340).

Almost surely, 2^26016820530 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26016820530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32720042880).

26016820530 is an abundant number, since it is smaller than the sum of its proper divisors (39423265230).

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

26016820530 is a wasteful number, since it uses less digits than its factorization.

26016820530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164915.

The product of its (nonzero) digits is 17280, while the sum is 33.

The spelling of 26016820530 in words is "twenty-six billion, sixteen million, eight hundred twenty thousand, five hundred thirty".