49750578109 has 8 divisors (see below), whose sum is σ = 50693814360. Its totient is φ = 48807510336.

The previous prime is 49750578079. The next prime is 49750578151. The reversal of 49750578109 is 90187505794.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 21498010884 + 28252567225 = 146622^2 + 168085^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 49750578109 - 2²³ = 49742189501 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 49750578109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49750578209) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 665659 + ... + 736615.

It is an arithmetic number, because the mean of its divisors is an integer number (6336726795).

Almost surely, 2^49750578109 is an apocalyptic number.

It is an amenable number.

49750578109 is a deficient number, since it is larger than the sum of its proper divisors (943236251).

49750578109 is a wasteful number, since it uses less digits than its factorization.

49750578109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84239.

The product of its (nonzero) digits is 3175200, while the sum is 55.

The spelling of 49750578109 in words is "forty-nine billion, seven hundred fifty million, five hundred seventy-eight thousand, one hundred nine".