3804257880721 has 8 divisors (see below), whose sum is σ = 3825365007464. Its totient is φ = 3783151733760.

The previous prime is 3804257880691. The next prime is 3804257880733. The reversal of 3804257880721 is 1270887524083.

It can be written as a sum of positive squares in 4 ways, for example, as 1018563359121 + 2785694521600 = 1009239^2 + 1669040^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3804257880721 - 2⁹ = 3804257880209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3804257887721) 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 7 ways as a sum of consecutive naturals, for example, 8382385 + ... + 8824561.

It is an arithmetic number, because the mean of its divisors is an integer number (478170625933).

Almost surely, 2^{3804257880721} is an apocalyptic number.

It is an amenable number.

3804257880721 is a deficient number, since it is larger than the sum of its proper divisors (21107126743).

3804257880721 is a wasteful number, since it uses less digits than its factorization.

3804257880721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489891.

The product of its (nonzero) digits is 6021120, while the sum is 55.

The spelling of 3804257880721 in words is "three trillion, eight hundred four billion, two hundred fifty-seven million, eight hundred eighty thousand, seven hundred twenty-one".