145566719999 has 2 divisors, whose sum is σ = 145566720000. Its totient is φ = 145566719998.

The previous prime is 145566719993. The next prime is 145566720007. The reversal of 145566719999 is 999917665541.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 145566719999 - 2⁴ = 145566719983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145566719993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72783359999 + 72783360000.

It is an arithmetic number, because the mean of its divisors is an integer number (72783360000).

Almost surely, 2^145566719999 is an apocalyptic number.

145566719999 is a deficient number, since it is larger than the sum of its proper divisors (1).

145566719999 is an equidigital number, since it uses as much as digits as its factorization.

145566719999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 165337200, while the sum is 71.

The spelling of 145566719999 in words is "one hundred forty-five billion, five hundred sixty-six million, seven hundred nineteen thousand, nine hundred ninety-nine".