17745745807 has 2 divisors, whose sum is σ = 17745745808. Its totient is φ = 17745745806.

The previous prime is 17745745789. The next prime is 17745745811. The reversal of 17745745807 is 70854754771.

It is a strong prime.

It is an emirp because it is prime and its reverse (70854754771) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 17745745807 - 2¹⁵ = 17745713039 is a prime.

It is a super-2 number, since 2×17745745807² (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 (17745748807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8872872903 + 8872872904.

It is an arithmetic number, because the mean of its divisors is an integer number (8872872904).

Almost surely, 2^17745745807 is an apocalyptic number.

17745745807 is a deficient number, since it is larger than the sum of its proper divisors (1).

17745745807 is an equidigital number, since it uses as much as digits as its factorization.

17745745807 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7683200, while the sum is 55.

The spelling of 17745745807 in words is "seventeen billion, seven hundred forty-five million, seven hundred forty-five thousand, eight hundred seven".