4081749974920 has 16 divisors (see below), whose sum is σ = 9183937443660. Its totient is φ = 1632699989952.

The previous prime is 4081749974881. The next prime is 4081749974923. The reversal of 4081749974920 is 294799471804.

It can be written as a sum of positive squares in 2 ways, for example, as 3679284077316 + 402465897604 = 1918146^2 + 634402^2 .

It is not an unprimeable number, because it can be changed into a prime (4081749974923) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 51021874647 + ... + 51021874726.

Almost surely, 2^{4081749974920} is an apocalyptic number.

4081749974920 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4081749974920 is an abundant number, since it is smaller than the sum of its proper divisors (5102187468740).

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

4081749974920 is a wasteful number, since it uses less digits than its factorization.

4081749974920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102043749384 (or 102043749380 counting only the distinct ones).

The product of its (nonzero) digits is 36578304, while the sum is 64.

The spelling of 4081749974920 in words is "four trillion, eighty-one billion, seven hundred forty-nine million, nine hundred seventy-four thousand, nine hundred twenty".