145218649589 has 32 divisors (see below), whose sum is σ = 162670032000. Its totient is φ = 128717132544.

The previous prime is 145218649549. The next prime is 145218649627. The reversal of 145218649589 is 985946812541.

It is not a de Polignac number, because 145218649589 - 2¹⁶ = 145218584053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145218649549) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 87112934 + ... + 87114600.

It is an arithmetic number, because the mean of its divisors is an integer number (5083438500).

Almost surely, 2^145218649589 is an apocalyptic number.

It is an amenable number.

145218649589 is a deficient number, since it is larger than the sum of its proper divisors (17451382411).

145218649589 is a wasteful number, since it uses less digits than its factorization.

145218649589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2837.

The product of its digits is 24883200, while the sum is 62.

The spelling of 145218649589 in words is "one hundred forty-five billion, two hundred eighteen million, six hundred forty-nine thousand, five hundred eighty-nine".