18061021411 has 2 divisors, whose sum is σ = 18061021412. Its totient is φ = 18061021410.

The previous prime is 18061021403. The next prime is 18061021471. The reversal of 18061021411 is 11412016081.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18061021411 - 2³ = 18061021403 is a prime.

It is not a weakly prime, because it can be changed into another prime (18061021471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9030510705 + 9030510706.

It is an arithmetic number, because the mean of its divisors is an integer number (9030510706).

Almost surely, 2^18061021411 is an apocalyptic number.

18061021411 is a deficient number, since it is larger than the sum of its proper divisors (1).

18061021411 is an equidigital number, since it uses as much as digits as its factorization.

18061021411 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 25.

Adding to 18061021411 its reverse (11412016081), we get a palindrome (29473037492).

The spelling of 18061021411 in words is "eighteen billion, sixty-one million, twenty-one thousand, four hundred eleven".