51678856174958 has 16 divisors (see below), whose sum is σ = 86398087723920. Its totient is φ = 23039490059136.

The previous prime is 51678856174949. The next prime is 51678856174963. The reversal of 51678856174958 is 85947165887615.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39999114041 + ... + 39999115332.

It is an arithmetic number, because the mean of its divisors is an integer number (5399880482745).

Almost surely, 2^{51678856174958} is an apocalyptic number.

51678856174958 is a deficient number, since it is larger than the sum of its proper divisors (34719231548962).

51678856174958 is a wasteful number, since it uses less digits than its factorization.

51678856174958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79998229411.

The product of its digits is 4064256000, while the sum is 80.

The spelling of 51678856174958 in words is "fifty-one trillion, six hundred seventy-eight billion, eight hundred fifty-six million, one hundred seventy-four thousand, nine hundred fifty-eight".