49649495489 has 12 divisors (see below), whose sum is σ = 54623487828. Its totient is φ = 45094489440.

The previous prime is 49649495473. The next prime is 49649495527. The reversal of 49649495489 is 98459494694.

It can be written as a sum of positive squares in 2 ways, for example, as 24743290000 + 24906205489 = 157300^2 + 157817^2 .

It is not a de Polignac number, because 49649495489 - 2⁴ = 49649495473 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (49649495989) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55454 + ... + 319959.

It is an arithmetic number, because the mean of its divisors is an integer number (4551957319).

Almost surely, 2^49649495489 is an apocalyptic number.

It is an amenable number.

49649495489 is a deficient number, since it is larger than the sum of its proper divisors (4973992339).

49649495489 is a wasteful number, since it uses less digits than its factorization.

49649495489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376528 (or 376517 counting only the distinct ones).

The product of its digits is 403107840, while the sum is 71.

The spelling of 49649495489 in words is "forty-nine billion, six hundred forty-nine million, four hundred ninety-five thousand, four hundred eighty-nine".