51170443632 has 1200 divisors, whose sum is σ = 206896757760. Its totient is φ = 12018585600.

The previous prime is 51170443609. The next prime is 51170443669. The reversal of 51170443632 is 23634407115.

51170443632 is a `hidden beast` number, since 5 + 1 + 17 + 0 + 4 + 4 + 3 + 632 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 368132619 + ... + 368132757.

Almost surely, 2^51170443632 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 51170443632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103448378880).

51170443632 is an abundant number, since it is smaller than the sum of its proper divisors (155726314128).

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

51170443632 is a wasteful number, since it uses less digits than its factorization.

51170443632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232 (or 210 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The spelling of 51170443632 in words is "fifty-one billion, one hundred seventy million, four hundred forty-three thousand, six hundred thirty-two".