49781641924 has 27 divisors (see below), whose sum is σ = 101347558893. Its totient is φ = 21333650688.

The previous prime is 49781641919. The next prime is 49781641957. The reversal of 49781641924 is 42914618794.

It is a happy number.

The square root of 49781641924 is 223118.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 34905448900 + 14876193024 = 186830^2 + 121968^2 .

It is an unprimeable number.

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 8 ways as a sum of consecutive naturals, for example, 3115684 + ... + 3131620.

Almost surely, 2^49781641924 is an apocalyptic number.

49781641924 is the 223118-th square number.

It is an amenable number.

49781641924 is an abundant number, since it is smaller than the sum of its proper divisors (51565916969).

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

49781641924 is an frugal number, since it uses more digits than its factorization.

49781641924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31892 (or 15946 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 55.

The spelling of 49781641924 in words is "forty-nine billion, seven hundred eighty-one million, six hundred forty-one thousand, nine hundred twenty-four".