51023020003 has 4 divisors (see below), whose sum is σ = 51023578320. Its totient is φ = 51022461688.

The previous prime is 51023019997. The next prime is 51023020043. The reversal of 51023020003 is 30002032015.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 30002032015 = 5 ⋅6000406403.

It is a cyclic number.

It is not a de Polignac number, because 51023020003 - 2⁹ = 51023019491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51023020043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106468 + ... + 336721.

It is an arithmetic number, because the mean of its divisors is an integer number (12755894580).

Almost surely, 2^51023020003 is an apocalyptic number.

51023020003 is a deficient number, since it is larger than the sum of its proper divisors (558317).

51023020003 is a wasteful number, since it uses less digits than its factorization.

51023020003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558316.

The product of its (nonzero) digits is 180, while the sum is 16.

Adding to 51023020003 its reverse (30002032015), we get a palindrome (81025052018).

The spelling of 51023020003 in words is "fifty-one billion, twenty-three million, twenty thousand, three".