50971641361 has 3 divisors (see below), whose sum is σ = 50971867131. Its totient is φ = 50971415592.

The previous prime is 50971641353. The next prime is 50971641377. The reversal of 50971641361 is 16314617905.

The square root of 50971641361 is 225769.

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., 50841681361 + 129960000 = 225481^2 + 11400^2 .

It is not a de Polignac number, because 50971641361 - 2³ = 50971641353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50971641341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 112885 + ... + 338653.

It is an arithmetic number, because the mean of its divisors is an integer number (16990622377).

Almost surely, 2^50971641361 is an apocalyptic number.

50971641361 is the 225769-th square number.

50971641361 is the 112885-th centered octagonal number.

It is an amenable number.

50971641361 is a deficient number, since it is larger than the sum of its proper divisors (225770).

50971641361 is an frugal number, since it uses more digits than its factorization.

50971641361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451538 (or 225769 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 43.

The spelling of 50971641361 in words is "fifty billion, nine hundred seventy-one million, six hundred forty-one thousand, three hundred sixty-one".