50516661165551 has 8 divisors (see below), whose sum is σ = 57767347877280. Its totient is φ = 43274479661568.

The previous prime is 50516661165517. The next prime is 50516661165557. The reversal of 50516661165551 is 15556116661505.

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 50516661165551 - 2³⁴ = 50499481296367 is a prime.

It is a super-3 number, since 3×50516661165551³ (a number of 42 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 50516661165493 and 50516661165502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50516661165557) 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, 2126289206 + ... + 2126312963.

It is an arithmetic number, because the mean of its divisors is an integer number (7220918484660).

Almost surely, 2^{50516661165551} is an apocalyptic number.

50516661165551 is a deficient number, since it is larger than the sum of its proper divisors (7250686711729).

50516661165551 is a wasteful number, since it uses less digits than its factorization.

50516661165551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4252603873.

The product of its (nonzero) digits is 4050000, while the sum is 53.

The spelling of 50516661165551 in words is "fifty trillion, five hundred sixteen billion, six hundred sixty-one million, one hundred sixty-five thousand, five hundred fifty-one".