145215665407 has 2 divisors, whose sum is σ = 145215665408. Its totient is φ = 145215665406.

The previous prime is 145215665389. The next prime is 145215665447. The reversal of 145215665407 is 704566512541.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 145215665407 - 2³¹ = 143068181759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145215665447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72607832703 + 72607832704.

It is an arithmetic number, because the mean of its divisors is an integer number (72607832704).

Almost surely, 2^145215665407 is an apocalyptic number.

145215665407 is a deficient number, since it is larger than the sum of its proper divisors (1).

145215665407 is an equidigital number, since it uses as much as digits as its factorization.

145215665407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008000, while the sum is 46.

The spelling of 145215665407 in words is "one hundred forty-five billion, two hundred fifteen million, six hundred sixty-five thousand, four hundred seven".