17780349023 has 2 divisors, whose sum is σ = 17780349024. Its totient is φ = 17780349022.

The previous prime is 17780348987. The next prime is 17780349043. The reversal of 17780349023 is 32094308771.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 17780349023 - 2²⁸ = 17511913567 is a prime.

It is a super-2 number, since 2×17780349023² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (17780349043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8890174511 + 8890174512.

It is an arithmetic number, because the mean of its divisors is an integer number (8890174512).

Almost surely, 2^17780349023 is an apocalyptic number.

17780349023 is a deficient number, since it is larger than the sum of its proper divisors (1).

17780349023 is an equidigital number, since it uses as much as digits as its factorization.

17780349023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 254016, while the sum is 44.

The spelling of 17780349023 in words is "seventeen billion, seven hundred eighty million, three hundred forty-nine thousand, twenty-three".