50239871584081 has 3 divisors (see below), whose sum is σ = 50239878672091. Its totient is φ = 50239864496072.

The previous prime is 50239871584061. The next prime is 50239871584087. The reversal of 50239871584081 is 18048517893205.

The square root of 50239871584081 is 7088009.

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., 32416614086481 + 17823257497600 = 5693559^2 + 4221760^2 .

It is a de Polignac number, because none of the positive numbers 2^k-50239871584081 is a prime.

It is a super-2 number, since 2×50239871584081² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50239871584087) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 3544005 + ... + 10632013.

Almost surely, 2^{50239871584081} is an apocalyptic number.

50239871584081 is the 7088009-th square number.

50239871584081 is the 3544005-th centered octagonal number.

It is an amenable number.

50239871584081 is a deficient number, since it is larger than the sum of its proper divisors (7088010).

50239871584081 is an frugal number, since it uses more digits than its factorization.

50239871584081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14176018 (or 7088009 counting only the distinct ones).

The product of its (nonzero) digits is 19353600, while the sum is 61.

The spelling of 50239871584081 in words is "fifty trillion, two hundred thirty-nine billion, eight hundred seventy-one million, five hundred eighty-four thousand, eighty-one".