20244040402 has 8 divisors (see below), whose sum is σ = 32152299516. Its totient is φ = 9526607232.

The previous prime is 20244040381. The next prime is 20244040417. The reversal of 20244040402 is 20404044202.

It can be written as a sum of positive squares in 2 ways, for example, as 19287932161 + 956108241 = 138881^2 + 30921^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 297706443 + ... + 297706510.

Almost surely, 2^20244040402 is an apocalyptic number.

20244040402 is a deficient number, since it is larger than the sum of its proper divisors (11908259114).

20244040402 is a wasteful number, since it uses less digits than its factorization.

20244040402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 595412972.

The product of its (nonzero) digits is 2048, while the sum is 22.

Adding to 20244040402 its reverse (20404044202), we get a palindrome (40648084604).

The spelling of 20244040402 in words is "twenty billion, two hundred forty-four million, forty thousand, four hundred two".