49863981328 has 60 divisors (see below), whose sum is σ = 116260153740. Its totient is φ = 20633362176.

The previous prime is 49863981289. The next prime is 49863981329. The reversal of 49863981328 is 82318936894.

It can be written as a sum of positive squares in 2 ways, for example, as 20104971264 + 29759010064 = 141792^2 + 172508^2 .

It is not an unprimeable number, because it can be changed into a prime (49863981329) 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 11 ways as a sum of consecutive naturals, for example, 1073851 + ... + 1119322.

It is an arithmetic number, because the mean of its divisors is an integer number (1937669229).

Almost surely, 2^49863981328 is an apocalyptic number.

It is an amenable number.

49863981328 is an abundant number, since it is smaller than the sum of its proper divisors (66396172412).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

49863981328 is a wasteful number, since it uses less digits than its factorization.

49863981328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2193224 (or 2193211 counting only the distinct ones).

The product of its digits is 17915904, while the sum is 61.

The spelling of 49863981328 in words is "forty-nine billion, eight hundred sixty-three million, nine hundred eighty-one thousand, three hundred twenty-eight".