51646298112 has 192 divisors, whose sum is σ = 161990992800. Its totient is φ = 16202465280.

The previous prime is 51646298089. The next prime is 51646298113. The reversal of 51646298112 is 21189264615.

51646298112 is a `hidden beast` number, since 5 + 1 + 6 + 4 + 629 + 8 + 1 + 12 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51646298113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 912562 + ... + 967502.

Almost surely, 2^51646298112 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 51646298112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80995496400).

51646298112 is an abundant number, since it is smaller than the sum of its proper divisors (110344694688).

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

51646298112 is a wasteful number, since it uses less digits than its factorization.

51646298112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54989 (or 54963 counting only the distinct ones).

The product of its digits is 207360, while the sum is 45.

The spelling of 51646298112 in words is "fifty-one billion, six hundred forty-six million, two hundred ninety-eight thousand, one hundred twelve".