20403403334 has 16 divisors (see below), whose sum is σ = 30763342896. Its totient is φ = 10148997600.

The previous prime is 20403403333. The next prime is 20403403337. The reversal of 20403403334 is 43330430402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20403403333) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1120664 + ... + 1138724.

It is an arithmetic number, because the mean of its divisors is an integer number (1922708931).

Almost surely, 2^20403403334 is an apocalyptic number.

20403403334 is a deficient number, since it is larger than the sum of its proper divisors (10359939562).

20403403334 is a wasteful number, since it uses less digits than its factorization.

20403403334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20951.

The product of its (nonzero) digits is 10368, while the sum is 26.

Adding to 20403403334 its reverse (43330430402), we get a palindrome (63733833736).

The spelling of 20403403334 in words is "twenty billion, four hundred three million, four hundred three thousand, three hundred thirty-four".