51166546860 has 192 divisors, whose sum is σ = 170343129600. Its totient is φ = 11311749120.

The previous prime is 51166546859. The next prime is 51166546867. The reversal of 51166546860 is 6864566115.

It is not an unprimeable number, because it can be changed into a prime (51166546867) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 676216 + ... + 748064.

It is an arithmetic number, because the mean of its divisors is an integer number (887203800).

Almost surely, 2^51166546860 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 51166546860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85171564800).

51166546860 is an abundant number, since it is smaller than the sum of its proper divisors (119176582740).

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

51166546860 is a wasteful number, since it uses less digits than its factorization.

51166546860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71968 (or 71966 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 48.

The spelling of 51166546860 in words is "fifty-one billion, one hundred sixty-six million, five hundred forty-six thousand, eight hundred sixty".