145463671709 has 2 divisors, whose sum is σ = 145463671710. Its totient is φ = 145463671708.

The previous prime is 145463671667. The next prime is 145463671729. The reversal of 145463671709 is 907176364541.

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., 145463671609 + 100 = 381397^2 + 10^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145463671709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145463671729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72731835854 + 72731835855.

It is an arithmetic number, because the mean of its divisors is an integer number (72731835855).

Almost surely, 2^145463671709 is an apocalyptic number.

It is an amenable number.

145463671709 is a deficient number, since it is larger than the sum of its proper divisors (1).

145463671709 is an equidigital number, since it uses as much as digits as its factorization.

145463671709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3810240, while the sum is 53.

The spelling of 145463671709 in words is "one hundred forty-five billion, four hundred sixty-three million, six hundred seventy-one thousand, seven hundred nine".