51600555105661 has 8 divisors (see below), whose sum is σ = 51901097387904. Its totient is φ = 51300038952240.

The previous prime is 51600555105647. The next prime is 51600555105667. The reversal of 51600555105661 is 16650155500615.

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 51600555105661 - 2⁴¹ = 49401531850109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51600555105667) 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, 2564001 + ... + 10477366.

It is an arithmetic number, because the mean of its divisors is an integer number (6487637173488).

Almost surely, 2^{51600555105661} is an apocalyptic number.

It is an amenable number.

51600555105661 is a deficient number, since it is larger than the sum of its proper divisors (300542282243).

51600555105661 is a wasteful number, since it uses less digits than its factorization.

51600555105661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13064411.

The product of its (nonzero) digits is 675000, while the sum is 46.

The spelling of 51600555105661 in words is "fifty-one trillion, six hundred billion, five hundred fifty-five million, one hundred five thousand, six hundred sixty-one".