51504230000 has 50 divisors (see below), whose sum is σ = 124696915464. Its totient is φ = 20601688000.

The previous prime is 51504229937. The next prime is 51504230033. The reversal of 51504230000 is 3240515.

It is a tau number, because it is divible by the number of its divisors (50).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 2565212 + ... + 2585211.

Almost surely, 2^51504230000 is an apocalyptic number.

51504230000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51504230000 is an abundant number, since it is smaller than the sum of its proper divisors (73192685464).

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

51504230000 is an equidigital number, since it uses as much as digits as its factorization.

51504230000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5150451 (or 5150430 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

Adding to 51504230000 its reverse (3240515), we get a palindrome (51507470515).

The spelling of 51504230000 in words is "fifty-one billion, five hundred four million, two hundred thirty thousand".