51766175978 has 16 divisors (see below), whose sum is σ = 86774345280. Its totient is φ = 22956175200.

The previous prime is 51766175977. The next prime is 51766176013. The reversal of 51766175978 is 87957166715.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 51766175978.

It is not an unprimeable number, because it can be changed into a prime (51766175971) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28694318 + ... + 28696121.

It is an arithmetic number, because the mean of its divisors is an integer number (5423396580).

Almost surely, 2^51766175978 is an apocalyptic number.

51766175978 is a deficient number, since it is larger than the sum of its proper divisors (35008169302).

51766175978 is a wasteful number, since it uses less digits than its factorization.

51766175978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57390493.

The product of its digits is 22226400, while the sum is 62.

The spelling of 51766175978 in words is "fifty-one billion, seven hundred sixty-six million, one hundred seventy-five thousand, nine hundred seventy-eight".