50504549991 has 16 divisors (see below), whose sum is σ = 76983047424. Its totient is φ = 28850842944.

The previous prime is 50504549989. The next prime is 50504550001. The reversal of 50504549991 is 19994540505.

50504549991 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 50504549991 - 2¹ = 50504549989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50504549941) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 300805 + ... + 437598.

It is an arithmetic number, because the mean of its divisors is an integer number (4811440464).

Almost surely, 2^50504549991 is an apocalyptic number.

50504549991 is a deficient number, since it is larger than the sum of its proper divisors (26478497433).

50504549991 is a wasteful number, since it uses less digits than its factorization.

50504549991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 741670.

The product of its (nonzero) digits is 1458000, while the sum is 51.

The spelling of 50504549991 in words is "fifty billion, five hundred four million, five hundred forty-nine thousand, nine hundred ninety-one".