50684867689 has 3 divisors (see below), whose sum is σ = 50685092823. Its totient is φ = 50684642556.

The previous prime is 50684867687. The next prime is 50684867699. The reversal of 50684867689 is 98676848605.

The square root of 50684867689 is 225133.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 11256025 + 50673611664 = 3355^2 + 225108^2 .

It is not a de Polignac number, because 50684867689 - 2¹ = 50684867687 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50684867687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 112567 + ... + 337699.

It is an arithmetic number, because the mean of its divisors is an integer number (16895030941).

Almost surely, 2^50684867689 is an apocalyptic number.

50684867689 is the 225133-rd square number.

50684867689 is the 112567-th centered octagonal number.

It is an amenable number.

50684867689 is a deficient number, since it is larger than the sum of its proper divisors (225134).

50684867689 is an frugal number, since it uses more digits than its factorization.

50684867689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450266 (or 225133 counting only the distinct ones).

The product of its (nonzero) digits is 139345920, while the sum is 67.

The spelling of 50684867689 in words is "fifty billion, six hundred eighty-four million, eight hundred sixty-seven thousand, six hundred eighty-nine".