51017267232 has 192 divisors, whose sum is σ = 157148208000. Its totient is φ = 16057626624.

The previous prime is 51017267179. The next prime is 51017267261. The reversal of 51017267232 is 23276271015.

51017267232 is a `hidden beast` number, since 510 + 1 + 72 + 6 + 72 + 3 + 2 = 666.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5133244 + ... + 5143172.

It is an arithmetic number, because the mean of its divisors is an integer number (818480250).

Almost surely, 2^51017267232 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 51017267232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78574104000).

51017267232 is an abundant number, since it is smaller than the sum of its proper divisors (106130940768).

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

51017267232 is a wasteful number, since it uses less digits than its factorization.

51017267232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10280 (or 10266 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The spelling of 51017267232 in words is "fifty-one billion, seventeen million, two hundred sixty-seven thousand, two hundred thirty-two".