145502421205145 has 16 divisors (see below), whose sum is σ = 177455385066240. Its totient is φ = 114505116553344.

The previous prime is 145502421205139. The next prime is 145502421205181. The reversal of 145502421205145 is 541502124205541.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145502421205145 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 301800572 + ... + 302282301.

It is an arithmetic number, because the mean of its divisors is an integer number (11090961566640).

Almost surely, 2^{145502421205145} is an apocalyptic number.

It is an amenable number.

145502421205145 is a deficient number, since it is larger than the sum of its proper divisors (31952963861095).

145502421205145 is an equidigital number, since it uses as much as digits as its factorization.

145502421205145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 604083664.

The product of its (nonzero) digits is 320000, while the sum is 41.

The spelling of 145502421205145 in words is "one hundred forty-five trillion, five hundred two billion, four hundred twenty-one million, two hundred five thousand, one hundred forty-five".