51422861508706 has 4 divisors (see below), whose sum is σ = 77134292263062. Its totient is φ = 25711430754352.

The previous prime is 51422861508671. The next prime is 51422861508721. The reversal of 51422861508706 is 60780516822415.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 44296412358025 + 7126449150681 = 6655555^2 + 2669541^2 .

It is a super-2 number, since 2×51422861508706² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12855715377175 + ... + 12855715377178.

Almost surely, 2^{51422861508706} is an apocalyptic number.

51422861508706 is a deficient number, since it is larger than the sum of its proper divisors (25711430754356).

51422861508706 is a wasteful number, since it uses less digits than its factorization.

51422861508706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25711430754355.

The product of its (nonzero) digits is 6451200, while the sum is 55.

The spelling of 51422861508706 in words is "fifty-one trillion, four hundred twenty-two billion, eight hundred sixty-one million, five hundred eight thousand, seven hundred six".