51510023000 has 32 divisors (see below), whose sum is σ = 120533456160. Its totient is φ = 20604008800.

The previous prime is 51510022999. The next prime is 51510023011. The reversal of 51510023000 is 32001515.

It is a self number, because there is not a number n which added to its sum of digits gives 51510023000.

It is a congruent number.

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, 25754012 + ... + 25756011.

It is an arithmetic number, because the mean of its divisors is an integer number (3766670505).

Almost surely, 2^51510023000 is an apocalyptic number.

51510023000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51510023000 is an abundant number, since it is smaller than the sum of its proper divisors (69023433160).

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

51510023000 is a wasteful number, since it uses less digits than its factorization.

51510023000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51510044 (or 51510030 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 17.

Adding to 51510023000 its reverse (32001515), we get a palindrome (51542024515).

The spelling of 51510023000 in words is "fifty-one billion, five hundred ten million, twenty-three thousand".