145221416444 has 36 divisors (see below), whose sum is σ = 286103349336. Its totient is φ = 64111114848.

The previous prime is 145221416429. The next prime is 145221416491. The reversal of 145221416444 is 444614122541.

It is a junction number, because it is equal to n+sod(n) for n = 145221416398 and 145221416407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2612114 + ... + 2667129.

Almost surely, 2^145221416444 is an apocalyptic number.

It is an amenable number.

145221416444 is a deficient number, since it is larger than the sum of its proper divisors (140881932892).

145221416444 is a wasteful number, since it uses less digits than its factorization.

145221416444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5279306 (or 5279281 counting only the distinct ones).

The product of its digits is 122880, while the sum is 38.

Adding to 145221416444 its reverse (444614122541), we get a palindrome (589835538985).

The spelling of 145221416444 in words is "one hundred forty-five billion, two hundred twenty-one million, four hundred sixteen thousand, four hundred forty-four".