50606551681 has 15 divisors (see below), whose sum is σ = 59050326273. Its totient is φ = 43367596020.

The previous prime is 50606551663. The next prime is 50606551687. The reversal of 50606551681 is 18615560605.

The square root of 50606551681 is 224959.

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

It is not a de Polignac number, because 50606551681 - 2⁵ = 50606551649 is a prime.

It is a super-2 number, since 2×50606551681² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50606551687) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 11020696 + ... + 11025286.

Almost surely, 2^50606551681 is an apocalyptic number.

50606551681 is the 224959-th square number.

50606551681 is the 112480-th centered octagonal number.

It is an amenable number.

50606551681 is a deficient number, since it is larger than the sum of its proper divisors (8443774592).

50606551681 is an frugal number, since it uses more digits than its factorization.

50606551681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9210 (or 4598 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 43.

The spelling of 50606551681 in words is "fifty billion, six hundred six million, five hundred fifty-one thousand, six hundred eighty-one".