51758170212 has 72 divisors (see below), whose sum is σ = 140768796000. Its totient is φ = 14758329600.

The previous prime is 51758170207. The next prime is 51758170213. The reversal of 51758170212 is 21207185715.

It is not an unprimeable number, because it can be changed into a prime (51758170213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 205212 + ... + 381612.

Almost surely, 2^51758170212 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 51758170212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70384398000).

51758170212 is an abundant number, since it is smaller than the sum of its proper divisors (89010625788).

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

51758170212 is a wasteful number, since it uses less digits than its factorization.

51758170212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176921 (or 176912 counting only the distinct ones).

The product of its (nonzero) digits is 39200, while the sum is 39.

The spelling of 51758170212 in words is "fifty-one billion, seven hundred fifty-eight million, one hundred seventy thousand, two hundred twelve".