1081684335643 has 4 divisors (see below), whose sum is σ = 1087347604608. Its totient is φ = 1076021066680.

The previous prime is 1081684335631. The next prime is 1081684335713. The reversal of 1081684335643 is 3465334861801.

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

It is a cyclic number.

It is not a de Polignac number, because 1081684335643 - 2⁹ = 1081684335131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1081684335143) 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, 2831634196 + ... + 2831634577.

It is an arithmetic number, because the mean of its divisors is an integer number (271836901152).

Almost surely, 2^{1081684335643} is an apocalyptic number.

1081684335643 is a deficient number, since it is larger than the sum of its proper divisors (5663268965).

1081684335643 is an equidigital number, since it uses as much as digits as its factorization.

1081684335643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5663268964.

The product of its (nonzero) digits is 4976640, while the sum is 52.

The spelling of 1081684335643 in words is "one trillion, eighty-one billion, six hundred eighty-four million, three hundred thirty-five thousand, six hundred forty-three".