18655325979383 has 2 divisors, whose sum is σ = 18655325979384. Its totient is φ = 18655325979382.

The previous prime is 18655325979223. The next prime is 18655325979413. The reversal of 18655325979383 is 38397952355681.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18655325979383 - 2¹² = 18655325975287 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18655325979383.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18655325979683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9327662989691 + 9327662989692.

It is an arithmetic number, because the mean of its divisors is an integer number (9327662989692).

Almost surely, 2^{18655325979383} is an apocalyptic number.

18655325979383 is a deficient number, since it is larger than the sum of its proper divisors (1).

18655325979383 is an equidigital number, since it uses as much as digits as its factorization.

18655325979383 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1469664000, while the sum is 74.

The spelling of 18655325979383 in words is "eighteen trillion, six hundred fifty-five billion, three hundred twenty-five million, nine hundred seventy-nine thousand, three hundred eighty-three".