51418578178651 has 16 divisors (see below), whose sum is σ = 55406346679296. Its totient is φ = 47541762170496.

The previous prime is 51418578178559. The next prime is 51418578178663. The reversal of 51418578178651 is 15687187581415.

51418578178651 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 51418578178651 - 2⁷ = 51418578178523 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (67).

It is not an unprimeable number, because it can be changed into a prime (51418578178691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61085551 + ... + 61921576.

It is an arithmetic number, because the mean of its divisors is an integer number (3462896667456).

Almost surely, 2^{51418578178651} is an apocalyptic number.

51418578178651 is a deficient number, since it is larger than the sum of its proper divisors (3987768500645).

51418578178651 is a wasteful number, since it uses less digits than its factorization.

51418578178651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123007578.

The product of its digits is 75264000, while the sum is 67.

The spelling of 51418578178651 in words is "fifty-one trillion, four hundred eighteen billion, five hundred seventy-eight million, one hundred seventy-eight thousand, six hundred fifty-one".