49818056138 has 8 divisors (see below), whose sum is σ = 74733660288. Its totient is φ = 24906836044.

The previous prime is 49818056131. The next prime is 49818056149. The reversal of 49818056138 is 83165081894.

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

It is a self number, because there is not a number n which added to its sum of digits gives 49818056138.

It is not an unprimeable number, because it can be changed into a prime (49818056131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1067456 + ... + 1113147.

It is an arithmetic number, because the mean of its divisors is an integer number (9341707536).

Almost surely, 2^49818056138 is an apocalyptic number.

49818056138 is a deficient number, since it is larger than the sum of its proper divisors (24915604150).

49818056138 is a wasteful number, since it uses less digits than its factorization.

49818056138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2192028.

The product of its (nonzero) digits is 1658880, while the sum is 53.

The spelling of 49818056138 in words is "forty-nine billion, eight hundred eighteen million, fifty-six thousand, one hundred thirty-eight".