4081675920449 has 4 divisors (see below), whose sum is σ = 4082627586180. Its totient is φ = 4080724254720.

The previous prime is 4081675920397. The next prime is 4081675920461. The reversal of 4081675920449 is 9440295761804.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3723479655424 + 358196265025 = 1929632^2 + 598495^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4081675920449 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4081675920349) 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, 475826432 + ... + 475835009.

It is an arithmetic number, because the mean of its divisors is an integer number (1020656896545).

Almost surely, 2^{4081675920449} is an apocalyptic number.

It is an amenable number.

4081675920449 is a deficient number, since it is larger than the sum of its proper divisors (951665731).

4081675920449 is an equidigital number, since it uses as much as digits as its factorization.

4081675920449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 951665730.

The product of its (nonzero) digits is 17418240, while the sum is 59.

The spelling of 4081675920449 in words is "four trillion, eighty-one billion, six hundred seventy-five million, nine hundred twenty thousand, four hundred forty-nine".