51075710166 has 64 divisors (see below), whose sum is σ = 111428577792. Its totient is φ = 15513161472.

The previous prime is 51075710137. The next prime is 51075710207. The reversal of 51075710166 is 66101757015.

It is a super-2 number, since 2×51075710166² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9986826 + ... + 9991938.

It is an arithmetic number, because the mean of its divisors is an integer number (1741071528).

Almost surely, 2^51075710166 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51075710166, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55714288896).

51075710166 is an abundant number, since it is smaller than the sum of its proper divisors (60352867626).

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

51075710166 is a wasteful number, since it uses less digits than its factorization.

51075710166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6757.

The product of its (nonzero) digits is 44100, while the sum is 39.

The spelling of 51075710166 in words is "fifty-one billion, seventy-five million, seven hundred ten thousand, one hundred sixty-six".