1081659174609 has 64 divisors (see below), whose sum is σ = 1610884825088. Its totient is φ = 641104761600.

The previous prime is 1081659174593. The next prime is 1081659174619. The reversal of 1081659174609 is 9064719561801.

It is a happy number.

It is not a de Polignac number, because 1081659174609 - 2⁴ = 1081659174593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1081659174619) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 305465379 + ... + 305468919.

It is an arithmetic number, because the mean of its divisors is an integer number (25170075392).

Almost surely, 2^{1081659174609} is an apocalyptic number.

It is an amenable number.

1081659174609 is a deficient number, since it is larger than the sum of its proper divisors (529225650479).

1081659174609 is a wasteful number, since it uses less digits than its factorization.

1081659174609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4718.

The product of its (nonzero) digits is 3265920, while the sum is 57.

The spelling of 1081659174609 in words is "one trillion, eighty-one billion, six hundred fifty-nine million, one hundred seventy-four thousand, six hundred nine".