51166067116057 has 4 divisors (see below), whose sum is σ = 52930414258020. Its totient is φ = 49401719974096.

The previous prime is 51166067116033. The next prime is 51166067116067. The reversal of 51166067116057 is 75061176066115.

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

It can be written as a sum of positive squares in 2 ways, for example, as 43072588346841 + 8093478769216 = 6562971^2 + 2844904^2 .

It is a cyclic number.

It is not a de Polignac number, because 51166067116057 - 2³¹ = 51163919632409 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51166067115995 and 51166067116013.

It is not an unprimeable number, because it can be changed into a prime (51166067116067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 882173570938 + ... + 882173570995.

It is an arithmetic number, because the mean of its divisors is an integer number (13232603564505).

Almost surely, 2^{51166067116057} is an apocalyptic number.

It is an amenable number.

51166067116057 is a deficient number, since it is larger than the sum of its proper divisors (1764347141963).

51166067116057 is a wasteful number, since it uses less digits than its factorization.

51166067116057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1764347141962.

The product of its (nonzero) digits is 1587600, while the sum is 52.

The spelling of 51166067116057 in words is "fifty-one trillion, one hundred sixty-six billion, sixty-seven million, one hundred sixteen thousand, fifty-seven".