20442506404 has 12 divisors (see below), whose sum is σ = 36449375004. Its totient is φ = 10028399264.

The previous prime is 20442506347. The next prime is 20442506459. The reversal of 20442506404 is 40460524402.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 17329089600 + 3113416804 = 131640^2 + 55798^2 .

It is a super-2 number, since 2×20442506404² (a number of 21 digits) contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 48213247 + ... + 48213670.

It is an arithmetic number, because the mean of its divisors is an integer number (3037447917).

Almost surely, 2^20442506404 is an apocalyptic number.

It is an amenable number.

20442506404 is a deficient number, since it is larger than the sum of its proper divisors (16006868600).

20442506404 is a wasteful number, since it uses less digits than its factorization.

20442506404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96426974 (or 96426972 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 31.

The spelling of 20442506404 in words is "twenty billion, four hundred forty-two million, five hundred six thousand, four hundred four".