18062689959917 has 2 divisors, whose sum is σ = 18062689959918. Its totient is φ = 18062689959916.

The previous prime is 18062689959911. The next prime is 18062689959971. The reversal of 18062689959917 is 71995998626081.

Together with next prime (18062689959971) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15564121729321 + 2498568230596 = 3945139^2 + 1580686^2 .

It is a cyclic number.

It is not a de Polignac number, because 18062689959917 - 2³⁴ = 18045510090733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18062689959911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9031344979958 + 9031344979959.

It is an arithmetic number, because the mean of its divisors is an integer number (9031344979959).

Almost surely, 2^{18062689959917} is an apocalyptic number.

It is an amenable number.

18062689959917 is a deficient number, since it is larger than the sum of its proper divisors (1).

18062689959917 is an equidigital number, since it uses as much as digits as its factorization.

18062689959917 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1058158080, while the sum is 80.

The spelling of 18062689959917 in words is "eighteen trillion, sixty-two billion, six hundred eighty-nine million, nine hundred fifty-nine thousand, nine hundred seventeen".