51354445560 has 128 divisors (see below), whose sum is σ = 169556924160. Its totient is φ = 12339353600.

The previous prime is 51354445553. The next prime is 51354445561. The reversal of 51354445560 is 6554445315.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51354445561) 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 31 ways as a sum of consecutive naturals, for example, 22986 + ... + 321305.

It is an arithmetic number, because the mean of its divisors is an integer number (1324663470).

Almost surely, 2^51354445560 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51354445560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84778462080).

51354445560 is an abundant number, since it is smaller than the sum of its proper divisors (118202478600).

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

51354445560 is a wasteful number, since it uses less digits than its factorization.

51354445560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344429 (or 344425 counting only the distinct ones).

The product of its (nonzero) digits is 720000, while the sum is 42.

The spelling of 51354445560 in words is "fifty-one billion, three hundred fifty-four million, four hundred forty-five thousand, five hundred sixty".