51503594720 has 48 divisors (see below), whose sum is σ = 122380644960. Its totient is φ = 20482343424.

The previous prime is 51503594719. The next prime is 51503594741. The reversal of 51503594720 is 2749530515.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 902660 + ... + 958019.

It is an arithmetic number, because the mean of its divisors is an integer number (2549596770).

Almost surely, 2^51503594720 is an apocalyptic number.

It is an amenable number.

51503594720 is an abundant number, since it is smaller than the sum of its proper divisors (70877050240).

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

51503594720 is a wasteful number, since it uses less digits than its factorization.

51503594720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1860867 (or 1860859 counting only the distinct ones).

The product of its (nonzero) digits is 189000, while the sum is 41.

The spelling of 51503594720 in words is "fifty-one billion, five hundred three million, five hundred ninety-four thousand, seven hundred twenty".