50159681549 has 4 divisors (see below), whose sum is σ = 51226908864. Its totient is φ = 49092454236.

The previous prime is 50159681527. The next prime is 50159681563. The reversal of 50159681549 is 94518695105.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 50159681549 - 2¹² = 50159677453 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 50159681549.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50159681519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 533613587 + ... + 533613680.

It is an arithmetic number, because the mean of its divisors is an integer number (12806727216).

Almost surely, 2^50159681549 is an apocalyptic number.

It is an amenable number.

50159681549 is a deficient number, since it is larger than the sum of its proper divisors (1067227315).

50159681549 is a wasteful number, since it uses less digits than its factorization.

50159681549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1067227314.

The product of its (nonzero) digits is 1944000, while the sum is 53.

The spelling of 50159681549 in words is "fifty billion, one hundred fifty-nine million, six hundred eighty-one thousand, five hundred forty-nine".