20413343442 has 16 divisors (see below), whose sum is σ = 40891396032. Its totient is φ = 6793662960.

The previous prime is 20413343437. The next prime is 20413343449. The reversal of 20413343442 is 24434331402.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20413343449) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2692113 + ... + 2699684.

It is an arithmetic number, because the mean of its divisors is an integer number (2555712252).

Almost surely, 2^20413343442 is an apocalyptic number.

20413343442 is an abundant number, since it is smaller than the sum of its proper divisors (20478052590).

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

20413343442 is a wasteful number, since it uses less digits than its factorization.

20413343442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5392433.

The product of its (nonzero) digits is 27648, while the sum is 30.

Adding to 20413343442 its reverse (24434331402), we get a palindrome (44847674844).

The spelling of 20413343442 in words is "twenty billion, four hundred thirteen million, three hundred forty-three thousand, four hundred forty-two".