320144012155 has 64 divisors (see below), whose sum is σ = 469729497600. Its totient is φ = 206658385920.

The previous prime is 320144012147. The next prime is 320144012197. The reversal of 320144012155 is 551210441023.

It is not a de Polignac number, because 320144012155 - 2³ = 320144012147 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1028656 + ... + 1303234.

It is an arithmetic number, because the mean of its divisors is an integer number (7339523400).

Almost surely, 2^320144012155 is an apocalyptic number.

320144012155 is a deficient number, since it is larger than the sum of its proper divisors (149585485445).

320144012155 is a wasteful number, since it uses less digits than its factorization.

320144012155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274684.

The product of its (nonzero) digits is 4800, while the sum is 28.

Adding to 320144012155 its reverse (551210441023), we get a palindrome (871354453178).

The spelling of 320144012155 in words is "three hundred twenty billion, one hundred forty-four million, twelve thousand, one hundred fifty-five".