51107020178 has 8 divisors (see below), whose sum is σ = 76828278972. Its totient is φ = 25497593856.

The previous prime is 51107020177. The next prime is 51107020193. The reversal of 51107020178 is 87102070115.

It can be written as a sum of positive squares in 2 ways, for example, as 50803807609 + 303212569 = 225397^2 + 17413^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×51107020178² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51107020177) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27956975 + ... + 27958802.

Almost surely, 2^51107020178 is an apocalyptic number.

51107020178 is a deficient number, since it is larger than the sum of its proper divisors (25721258794).

51107020178 is a wasteful number, since it uses less digits than its factorization.

51107020178 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55916236.

The product of its (nonzero) digits is 3920, while the sum is 32.

The spelling of 51107020178 in words is "fifty-one billion, one hundred seven million, twenty thousand, one hundred seventy-eight".