20440433100 has 36 divisors (see below), whose sum is σ = 59140987304. Its totient is φ = 5450782080.

The previous prime is 20440433099. The next prime is 20440433137. The reversal of 20440433100 is 133404402.

It is a super-2 number, since 2×20440433100² (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 (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34067089 + ... + 34067688.

Almost surely, 2^20440433100 is an apocalyptic number.

20440433100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20440433100 is an abundant number, since it is smaller than the sum of its proper divisors (38700554204).

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

20440433100 is a wasteful number, since it uses less digits than its factorization.

20440433100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68134794 (or 68134787 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 20440433100 its reverse (133404402), we get a palindrome (20573837502).

The spelling of 20440433100 in words is "twenty billion, four hundred forty million, four hundred thirty-three thousand, one hundred".