51450068742678 has 48 divisors (see below), whose sum is σ = 114443018366976. Its totient is φ = 16697248501680.

The previous prime is 51450068742643. The next prime is 51450068742769. The reversal of 51450068742678 is 87624786005415.

51450068742678 is a `hidden beast` number, since 5 + 1 + 4 + 500 + 6 + 87 + 42 + 6 + 7 + 8 = 666.

It is a super-2 number, since 2×51450068742678² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 159041776 + ... + 159364947.

It is an arithmetic number, because the mean of its divisors is an integer number (2384229549312).

Almost surely, 2^{51450068742678} is an apocalyptic number.

51450068742678 is an abundant number, since it is smaller than the sum of its proper divisors (62992949624298).

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

51450068742678 is a wasteful number, since it uses less digits than its factorization.

51450068742678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318406969 (or 318406966 counting only the distinct ones).

The product of its (nonzero) digits is 90316800, while the sum is 63.

The spelling of 51450068742678 in words is "fifty-one trillion, four hundred fifty billion, sixty-eight million, seven hundred forty-two thousand, six hundred seventy-eight".