51560605500 has 96 divisors (see below), whose sum is σ = 151101507648. Its totient is φ = 13661856000.

The previous prime is 51560605483. The next prime is 51560605513. The reversal of 51560605500 is 550606515.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 126030 + ... + 344970.

It is an arithmetic number, because the mean of its divisors is an integer number (1573974038).

Almost surely, 2^51560605500 is an apocalyptic number.

51560605500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51560605500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75550753824).

51560605500 is an abundant number, since it is smaller than the sum of its proper divisors (99540902148).

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

51560605500 is a wasteful number, since it uses less digits than its factorization.

51560605500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219120 (or 219108 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 33.

The spelling of 51560605500 in words is "fifty-one billion, five hundred sixty million, six hundred five thousand, five hundred".