320515342155 has 96 divisors (see below), whose sum is σ = 584268422400. Its totient is φ = 162348834816.

The previous prime is 320515342153. The next prime is 320515342177. The reversal of 320515342155 is 551243515023.

320515342155 is a `hidden beast` number, since 3 + 2 + 0 + 51 + 534 + 21 + 55 = 666.

It is not a de Polignac number, because 320515342155 - 2¹ = 320515342153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (320515342153) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 30435931 + ... + 30446459.

It is an arithmetic number, because the mean of its divisors is an integer number (6086129400).

Almost surely, 2^320515342155 is an apocalyptic number.

320515342155 is a deficient number, since it is larger than the sum of its proper divisors (263753080245).

320515342155 is a wasteful number, since it uses less digits than its factorization.

320515342155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11013 (or 11010 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 36.

Adding to 320515342155 its reverse (551243515023), we get a palindrome (871758857178).

The spelling of 320515342155 in words is "three hundred twenty billion, five hundred fifteen million, three hundred forty-two thousand, one hundred fifty-five".