145221013445 has 8 divisors (see below), whose sum is σ = 174387687936. Its totient is φ = 116095162896.

The previous prime is 145221013439. The next prime is 145221013463. The reversal of 145221013445 is 544310122541.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 145221013445 - 2⁴ = 145221013429 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10198157 + ... + 10212386.

It is an arithmetic number, because the mean of its divisors is an integer number (21798460992).

Almost surely, 2^145221013445 is an apocalyptic number.

It is an amenable number.

145221013445 is a deficient number, since it is larger than the sum of its proper divisors (29166674491).

145221013445 is a wasteful number, since it uses less digits than its factorization.

145221013445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20411971.

The product of its (nonzero) digits is 19200, while the sum is 32.

Adding to 145221013445 its reverse (544310122541), we get a palindrome (689531135986).

The spelling of 145221013445 in words is "one hundred forty-five billion, two hundred twenty-one million, thirteen thousand, four hundred forty-five".