145412223391 has 2 divisors, whose sum is σ = 145412223392. Its totient is φ = 145412223390.

The previous prime is 145412223241. The next prime is 145412223403. The reversal of 145412223391 is 193322214541.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 145412223391 - 2²³ = 145403834783 is a prime.

It is a super-2 number, since 2×145412223391² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 145412223391.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145412223191) 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, 72706111695 + 72706111696.

It is an arithmetic number, because the mean of its divisors is an integer number (72706111696).

Almost surely, 2^145412223391 is an apocalyptic number.

145412223391 is a deficient number, since it is larger than the sum of its proper divisors (1).

145412223391 is an equidigital number, since it uses as much as digits as its factorization.

145412223391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51840, while the sum is 37.

The spelling of 145412223391 in words is "one hundred forty-five billion, four hundred twelve million, two hundred twenty-three thousand, three hundred ninety-one".