145305323405 has 16 divisors (see below), whose sum is σ = 201407166144. Its totient is φ = 99460327680.

The previous prime is 145305323393. The next prime is 145305323431. The reversal of 145305323405 is 504323503541.

It is a happy number.

It is not a de Polignac number, because 145305323405 - 2¹⁸ = 145305061261 is a prime.

It is a super-2 number, since 2×145305323405² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77702447 + ... + 77704316.

It is an arithmetic number, because the mean of its divisors is an integer number (12587947884).

Almost surely, 2^145305323405 is an apocalyptic number.

It is an amenable number.

145305323405 is a deficient number, since it is larger than the sum of its proper divisors (56101842739).

145305323405 is a wasteful number, since it uses less digits than its factorization.

145305323405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155406796.

The product of its (nonzero) digits is 108000, while the sum is 35.

Adding to 145305323405 its reverse (504323503541), we get a palindrome (649628826946).

The spelling of 145305323405 in words is "one hundred forty-five billion, three hundred five million, three hundred twenty-three thousand, four hundred five".