49695724789 has 4 divisors (see below), whose sum is σ = 51038852524. Its totient is φ = 48352597056.

The previous prime is 49695724763. The next prime is 49695724843. The reversal of 49695724789 is 98742759694.

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 36096200100 + 13599524689 = 189990^2 + 116617^2 .

It is a cyclic number.

It is not a de Polignac number, because 49695724789 - 2⁹ = 49695724277 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 (49695722789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 671563812 + ... + 671563885.

It is an arithmetic number, because the mean of its divisors is an integer number (12759713131).

Almost surely, 2^49695724789 is an apocalyptic number.

It is an amenable number.

49695724789 is a deficient number, since it is larger than the sum of its proper divisors (1343127735).

49695724789 is a wasteful number, since it uses less digits than its factorization.

49695724789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1343127734.

The product of its digits is 274337280, while the sum is 70.

The spelling of 49695724789 in words is "forty-nine billion, six hundred ninety-five million, seven hundred twenty-four thousand, seven hundred eighty-nine".