51766228992 has 192 divisors, whose sum is σ = 146075529600. Its totient is φ = 16257024000.

The previous prime is 51766228931. The next prime is 51766229023. The reversal of 51766228992 is 29982266715.

It is a tau number, because it is divible by the number of its divisors (192).

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22995867 + ... + 22998117.

It is an arithmetic number, because the mean of its divisors is an integer number (760810050).

Almost surely, 2^51766228992 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 51766228992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73037764800).

51766228992 is an abundant number, since it is smaller than the sum of its proper divisors (94309300608).

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

51766228992 is a wasteful number, since it uses less digits than its factorization.

51766228992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2492 (or 2472 counting only the distinct ones).

The product of its digits is 6531840, while the sum is 57.

The spelling of 51766228992 in words is "fifty-one billion, seven hundred sixty-six million, two hundred twenty-eight thousand, nine hundred ninety-two".