51030061056 has 234 divisors, whose sum is σ = 159632498688. Its totient is φ = 15699640320.

The previous prime is 51030061009. The next prime is 51030061099. The reversal of 51030061056 is 65016003015.

It is a happy number.

51030061056 is a `hidden beast` number, since 5 + 10 + 30 + 0 + 610 + 5 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (234).

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 17 ways as a sum of consecutive naturals, for example, 6225921 + ... + 6234111.

Almost surely, 2^51030061056 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 51030061056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79816249344).

51030061056 is an abundant number, since it is smaller than the sum of its proper divisors (108602437632).

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

51030061056 is a wasteful number, since it uses less digits than its factorization.

51030061056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8247 (or 8209 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The spelling of 51030061056 in words is "fifty-one billion, thirty million, sixty-one thousand, fifty-six".