49920681220 has 48 divisors (see below), whose sum is σ = 111982490928. Its totient is φ = 18627338240.

The previous prime is 49920681199. The next prime is 49920681227. The reversal of 49920681220 is 2218602994.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 15020463364 + 34900217856 = 122558^2 + 186816^2 .

It is not an unprimeable number, because it can be changed into a prime (49920681227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 611251 + ... + 688090.

It is an arithmetic number, because the mean of its divisors is an integer number (2332968561).

Almost surely, 2^49920681220 is an apocalyptic number.

It is an amenable number.

49920681220 is an abundant number, since it is smaller than the sum of its proper divisors (62061809708).

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

49920681220 is a wasteful number, since it uses less digits than its factorization.

49920681220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1299480 (or 1299478 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 43.

The spelling of 49920681220 in words is "forty-nine billion, nine hundred twenty million, six hundred eighty-one thousand, two hundred twenty".