18132947892161 has 2 divisors, whose sum is σ = 18132947892162. Its totient is φ = 18132947892160.

The previous prime is 18132947892097. The next prime is 18132947892211. The reversal of 18132947892161 is 16129874923181.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11849904332161 + 6283043560000 = 3442369^2 + 2506600^2 .

It is a cyclic number.

It is not a de Polignac number, because 18132947892161 - 2⁶ = 18132947892097 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18132947892094 and 18132947892103.

It is not a weakly prime, because it can be changed into another prime (18132947891161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9066473946080 + 9066473946081.

It is an arithmetic number, because the mean of its divisors is an integer number (9066473946081).

Almost surely, 2^{18132947892161} is an apocalyptic number.

It is an amenable number.

18132947892161 is a deficient number, since it is larger than the sum of its proper divisors (1).

18132947892161 is an equidigital number, since it uses as much as digits as its factorization.

18132947892161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10450944, while the sum is 62.

The spelling of 18132947892161 in words is "eighteen trillion, one hundred thirty-two billion, nine hundred forty-seven million, eight hundred ninety-two thousand, one hundred sixty-one".