145122345105405 has 32 divisors (see below), whose sum is σ = 236366012252160. Its totient is φ = 76018756307520.

The previous prime is 145122345105359. The next prime is 145122345105427. The reversal of 145122345105405 is 504501543221541.

It is not a de Polignac number, because 145122345105405 - 2⁷ = 145122345105277 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 320365587 + ... + 320818256.

It is an arithmetic number, because the mean of its divisors is an integer number (7386437882880).

Almost surely, 2^{145122345105405} is an apocalyptic number.

145122345105405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

145122345105405 is a deficient number, since it is larger than the sum of its proper divisors (91243667146755).

145122345105405 is a wasteful number, since it uses less digits than its factorization.

145122345105405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641184121.

The product of its (nonzero) digits is 480000, while the sum is 42.

Adding to 145122345105405 its reverse (504501543221541), we get a palindrome (649623888326946).

The spelling of 145122345105405 in words is "one hundred forty-five trillion, one hundred twenty-two billion, three hundred forty-five million, one hundred five thousand, four hundred five".