320144012154 has 12 divisors (see below), whose sum is σ = 693645359706. Its totient is φ = 106714670712.

The previous prime is 320144012147. The next prime is 320144012197. The reversal of 320144012154 is 451210441023.

320144012154 is a `hidden beast` number, since 3 + 2 + 0 + 1 + 440 + 1 + 215 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 318234759129 + 1909253025 = 564123^2 + 43695^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8892889209 + ... + 8892889244.

Almost surely, 2^320144012154 is an apocalyptic number.

320144012154 is an abundant number, since it is smaller than the sum of its proper divisors (373501347552).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

320144012154 is a wasteful number, since it uses less digits than its factorization.

320144012154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17785778461 (or 17785778458 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

Adding to 320144012154 its reverse (451210441023), we get a palindrome (771354453177).

The spelling of 320144012154 in words is "three hundred twenty billion, one hundred forty-four million, twelve thousand, one hundred fifty-four".