51942850560 has 680 divisors, whose sum is σ = 197927695680. Its totient is φ = 12995002368.

The previous prime is 51942850559. The next prime is 51942850577. The reversal of 51942850560 is 6505824915.

51942850560 is a `hidden beast` number, since 5 + 1 + 9 + 4 + 2 + 85 + 0 + 560 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 504299469 + ... + 504299571.

Almost surely, 2^51942850560 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 51942850560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98963847840).

51942850560 is an abundant number, since it is smaller than the sum of its proper divisors (145984845120).

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

51942850560 is an equidigital number, since it uses as much as digits as its factorization.

51942850560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171 (or 132 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 45.

The spelling of 51942850560 in words is "fifty-one billion, nine hundred forty-two million, eight hundred fifty thousand, five hundred sixty".