49818881894 has 4 divisors (see below), whose sum is σ = 74728322844. Its totient is φ = 24909440946.

The previous prime is 49818881873. The next prime is 49818881909.

49818881894 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 12454720472 + ... + 12454720475.

It is an arithmetic number, because the mean of its divisors is an integer number (18682080711).

Almost surely, 2^49818881894 is an apocalyptic number.

49818881894 is a deficient number, since it is larger than the sum of its proper divisors (24909440950).

49818881894 is a wasteful number, since it uses less digits than its factorization.

49818881894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24909440949.

The product of its digits is 42467328, while the sum is 68.

The spelling of 49818881894 in words is "forty-nine billion, eight hundred eighteen million, eight hundred eighty-one thousand, eight hundred ninety-four".