49168643879 has 16 divisors (see below), whose sum is σ = 50701341312. Its totient is φ = 47647024128.

The previous prime is 49168643869. The next prime is 49168643893. The reversal of 49168643879 is 97834686194.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49168643879 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 (49168643809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14404577 + ... + 14407989.

It is an arithmetic number, because the mean of its divisors is an integer number (3168833832).

Almost surely, 2^49168643879 is an apocalyptic number.

49168643879 is a deficient number, since it is larger than the sum of its proper divisors (1532697433).

49168643879 is a wasteful number, since it uses less digits than its factorization.

49168643879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4906.

The product of its digits is 62705664, while the sum is 65.

The spelling of 49168643879 in words is "forty-nine billion, one hundred sixty-eight million, six hundred forty-three thousand, eight hundred seventy-nine".