20440431002 has 16 divisors (see below), whose sum is σ = 33315475200. Its totient is φ = 9369976320.

The previous prime is 20440430987. The next prime is 20440431041. The reversal of 20440431002 is 20013404402.

It is a super-2 number, since 2×20440431002² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8674727 + ... + 8677082.

It is an arithmetic number, because the mean of its divisors is an integer number (2082217200).

Almost surely, 2^20440431002 is an apocalyptic number.

20440431002 is a deficient number, since it is larger than the sum of its proper divisors (12875044198).

20440431002 is a wasteful number, since it uses less digits than its factorization.

20440431002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17351861.

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 20440431002 its reverse (20013404402), we get a palindrome (40453835404).

The spelling of 20440431002 in words is "twenty billion, four hundred forty million, four hundred thirty-one thousand, two".