20420326453146 has 96 divisors (see below), whose sum is σ = 43717115553792. Its totient is φ = 6350815674720.

The previous prime is 20420326453139. The next prime is 20420326453151. The reversal of 20420326453146 is 64135462302402.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20420326453098 and 20420326453107.

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, 27157665 + ... + 27899451.

It is an arithmetic number, because the mean of its divisors is an integer number (455386620352).

Almost surely, 2^{20420326453146} is an apocalyptic number.

20420326453146 is an abundant number, since it is smaller than the sum of its proper divisors (23296789100646).

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

20420326453146 is a wasteful number, since it uses less digits than its factorization.

20420326453146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 741984 (or 741937 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 42.

Adding to 20420326453146 its reverse (64135462302402), we get a palindrome (84555788755548).

The spelling of 20420326453146 in words is "twenty trillion, four hundred twenty billion, three hundred twenty-six million, four hundred fifty-three thousand, one hundred forty-six".