51116166655649 has 8 divisors (see below), whose sum is σ = 52373402517408. Its totient is φ = 49859430798240.

The previous prime is 51116166655633. The next prime is 51116166655651. The reversal of 51116166655649 is 94655666161115.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51116166655649 - 2⁴ = 51116166655633 is a prime.

It is a super-3 number, since 3×51116166655649³ (a number of 42 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51116166655591 and 51116166655600.

It is not an unprimeable number, because it can be changed into a prime (51116156655649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124794107 + ... + 125203040.

It is an arithmetic number, because the mean of its divisors is an integer number (6546675314676).

Almost surely, 2^{51116166655649} is an apocalyptic number.

It is an amenable number.

51116166655649 is a deficient number, since it is larger than the sum of its proper divisors (1257235861759).

51116166655649 is a wasteful number, since it uses less digits than its factorization.

51116166655649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250002175.

The product of its digits is 34992000, while the sum is 62.

The spelling of 51116166655649 in words is "fifty-one trillion, one hundred sixteen billion, one hundred sixty-six million, six hundred fifty-five thousand, six hundred forty-nine".