50581440949 has 4 divisors (see below), whose sum is σ = 54472321036. Its totient is φ = 46690560864.

The previous prime is 50581440911. The next prime is 50581440979. The reversal of 50581440949 is 94904418505.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 33683260900 + 16898180049 = 183530^2 + 129993^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50581440949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50581440979) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1945440024 + ... + 1945440049.

It is an arithmetic number, because the mean of its divisors is an integer number (13618080259).

Almost surely, 2^50581440949 is an apocalyptic number.

It is an amenable number.

50581440949 is a deficient number, since it is larger than the sum of its proper divisors (3890880087).

50581440949 is a wasteful number, since it uses less digits than its factorization.

50581440949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3890880086.

The product of its (nonzero) digits is 1036800, while the sum is 49.

The spelling of 50581440949 in words is "fifty billion, five hundred eighty-one million, four hundred forty thousand, nine hundred forty-nine".