20413343402 has 16 divisors (see below), whose sum is σ = 32531860872. Its totient is φ = 9573488640.

The previous prime is 20413343347. The next prime is 20413343417. The reversal of 20413343402 is 20434331402.

It can be written as a sum of positive squares in 4 ways, for example, as 18292833001 + 2120510401 = 135251^2 + 46049^2 .

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 7 ways as a sum of consecutive naturals, for example, 1014599 + ... + 1034522.

Almost surely, 2^20413343402 is an apocalyptic number.

20413343402 is a deficient number, since it is larger than the sum of its proper divisors (12118517470).

20413343402 is a wasteful number, since it uses less digits than its factorization.

20413343402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2049433.

The product of its (nonzero) digits is 6912, while the sum is 26.

Adding to 20413343402 its reverse (20434331402), we get a palindrome (40847674804).

The spelling of 20413343402 in words is "twenty billion, four hundred thirteen million, three hundred forty-three thousand, four hundred two".