18140589569161 has 32 divisors (see below), whose sum is σ = 18739377029120. Its totient is φ = 17550662822784.

The previous prime is 18140589569131. The next prime is 18140589569209. The reversal of 18140589569161 is 16196598504181.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18140589569161 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18140589569093 and 18140589569102.

It is not an unprimeable number, because it can be changed into a prime (18140589569131) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4079284840 + ... + 4079289286.

It is an arithmetic number, because the mean of its divisors is an integer number (585605532160).

Almost surely, 2^{18140589569161} is an apocalyptic number.

It is an amenable number.

18140589569161 is a deficient number, since it is larger than the sum of its proper divisors (598787459959).

18140589569161 is a wasteful number, since it uses less digits than its factorization.

18140589569161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6485.

The product of its (nonzero) digits is 18662400, while the sum is 64.

The spelling of 18140589569161 in words is "eighteen trillion, one hundred forty billion, five hundred eighty-nine million, five hundred sixty-nine thousand, one hundred sixty-one".