145215466493 has 2 divisors, whose sum is σ = 145215466494. Its totient is φ = 145215466492.

The previous prime is 145215466463. The next prime is 145215466511. The reversal of 145215466493 is 394664512541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84580343929 + 60635122564 = 290827^2 + 246242^2 .

It is a cyclic number.

It is not a de Polignac number, because 145215466493 - 2³⁰ = 144141724669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145215466423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72607733246 + 72607733247.

It is an arithmetic number, because the mean of its divisors is an integer number (72607733247).

Almost surely, 2^145215466493 is an apocalyptic number.

It is an amenable number.

145215466493 is a deficient number, since it is larger than the sum of its proper divisors (1).

145215466493 is an equidigital number, since it uses as much as digits as its factorization.

145215466493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3110400, while the sum is 50.

The spelling of 145215466493 in words is "one hundred forty-five billion, two hundred fifteen million, four hundred sixty-six thousand, four hundred ninety-three".