51165208716196 has 27 divisors (see below), whose sum is σ = 91261760726563. Its totient is φ = 25099541754560.

The previous prime is 51165208716191. The next prime is 51165208716227. The reversal of 51165208716196 is 69161780256115.

The square root of 51165208716196 is 7152986.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 29388650476900 + 21776558239296 = 5421130^2 + 4666536^2 .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51165208716196.

It is not an unprimeable number, because it can be changed into a prime (51165208716191) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 758182776 + ... + 758250256.

Almost surely, 2^{51165208716196} is an apocalyptic number.

51165208716196 is the 7152986-th square number.

It is an amenable number.

51165208716196 is a deficient number, since it is larger than the sum of its proper divisors (40096552010367).

51165208716196 is an frugal number, since it uses more digits than its factorization.

51165208716196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135072 (or 67536 counting only the distinct ones).

The product of its (nonzero) digits is 5443200, while the sum is 58.

The spelling of 51165208716196 in words is "fifty-one trillion, one hundred sixty-five billion, two hundred eight million, seven hundred sixteen thousand, one hundred ninety-six".