49661591589 has 20 divisors (see below), whose sum is σ = 74752154400. Its totient is φ = 32854989960.

The previous prime is 49661591531. The next prime is 49661591593. The reversal of 49661591589 is 98519516694.

49661591589 is a `hidden beast` number, since 4 + 9 + 6 + 615 + 9 + 1 + 5 + 8 + 9 = 666.

It is not a de Polignac number, because 49661591589 - 2²³ = 49653202981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49661591689) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2329489 + ... + 2350710.

It is an arithmetic number, because the mean of its divisors is an integer number (3737607720).

Almost surely, 2^49661591589 is an apocalyptic number.

It is an amenable number.

49661591589 is a deficient number, since it is larger than the sum of its proper divisors (25090562811).

49661591589 is a wasteful number, since it uses less digits than its factorization.

49661591589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4680342 (or 4680333 counting only the distinct ones).

The product of its digits is 20995200, while the sum is 63.

The spelling of 49661591589 in words is "forty-nine billion, six hundred sixty-one million, five hundred ninety-one thousand, five hundred eighty-nine".