145424415446 has 4 divisors (see below), whose sum is σ = 218136623172. Its totient is φ = 72712207722.

The previous prime is 145424415439. The next prime is 145424415467. The reversal of 145424415446 is 644514424541.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×145424415446² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 145424415397 and 145424415406.

It is a congruent number.

It is an unprimeable number.

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, 36356103860 + ... + 36356103863.

It is an arithmetic number, because the mean of its divisors is an integer number (54534155793).

Almost surely, 2^145424415446 is an apocalyptic number.

145424415446 is a deficient number, since it is larger than the sum of its proper divisors (72712207726).

145424415446 is an equidigital number, since it uses as much as digits as its factorization.

145424415446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72712207725.

The product of its digits is 1228800, while the sum is 44.

Adding to 145424415446 its reverse (644514424541), we get a palindrome (789938839987).

The spelling of 145424415446 in words is "one hundred forty-five billion, four hundred twenty-four million, four hundred fifteen thousand, four hundred forty-six".