20420326105 has 8 divisors (see below), whose sum is σ = 24606921600. Its totient is φ = 16267907376.

The previous prime is 20420326027. The next prime is 20420326151. The reversal of 20420326105 is 50162302402.

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 20420326105 - 2¹⁵ = 20420293337 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20420326105.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8542875 + ... + 8545264.

It is an arithmetic number, because the mean of its divisors is an integer number (3075865200).

Almost surely, 2^20420326105 is an apocalyptic number.

It is an amenable number.

20420326105 is a deficient number, since it is larger than the sum of its proper divisors (4186595495).

20420326105 is a wasteful number, since it uses less digits than its factorization.

20420326105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17088383.

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 20420326105 its reverse (50162302402), we get a palindrome (70582628507).

The spelling of 20420326105 in words is "twenty billion, four hundred twenty million, three hundred twenty-six thousand, one hundred five".