17980264553 has 2 divisors, whose sum is σ = 17980264554. Its totient is φ = 17980264552.

The previous prime is 17980264501. The next prime is 17980264597. The reversal of 17980264553 is 35546208971.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15955984489 + 2024280064 = 126317^2 + 44992^2 .

It is a cyclic number.

It is not a de Polignac number, because 17980264553 - 2¹⁸ = 17980002409 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (17980264453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8990132276 + 8990132277.

It is an arithmetic number, because the mean of its divisors is an integer number (8990132277).

It is a 1-persistent number, because it is pandigital, but 2⋅17980264553 = 35960529106 is not.

Almost surely, 2^17980264553 is an apocalyptic number.

It is an amenable number.

17980264553 is a deficient number, since it is larger than the sum of its proper divisors (1).

17980264553 is an equidigital number, since it uses as much as digits as its factorization.

17980264553 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1814400, while the sum is 50.

The spelling of 17980264553 in words is "seventeen billion, nine hundred eighty million, two hundred sixty-four thousand, five hundred fifty-three".