20451333002404 has 24 divisors (see below), whose sum is σ = 36551544301440. Its totient is φ = 10008037318176.

The previous prime is 20451333002389. The next prime is 20451333002413. The reversal of 20451333002404 is 40420033315402.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50969814 + ... + 51369490.

It is an arithmetic number, because the mean of its divisors is an integer number (1522981012560).

Almost surely, 2^{20451333002404} is an apocalyptic number.

It is an amenable number.

20451333002404 is a deficient number, since it is larger than the sum of its proper divisors (16100211299036).

20451333002404 is a wasteful number, since it uses less digits than its factorization.

20451333002404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 671907 (or 671905 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 31.

Adding to 20451333002404 its reverse (40420033315402), we get a palindrome (60871366317806).

The spelling of 20451333002404 in words is "twenty trillion, four hundred fifty-one billion, three hundred thirty-three million, two thousand, four hundred four".