320215202155 has 16 divisors (see below), whose sum is σ = 384921989568. Its totient is φ = 255730048000.

The previous prime is 320215202141. The next prime is 320215202161. The reversal of 320215202155 is 551202512023.

It is not a de Polignac number, because 320215202155 - 2⁹ = 320215201643 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6993135 + ... + 7038775.

It is an arithmetic number, because the mean of its divisors is an integer number (24057624348).

Almost surely, 2^320215202155 is an apocalyptic number.

320215202155 is a deficient number, since it is larger than the sum of its proper divisors (64706787413).

320215202155 is a wasteful number, since it uses less digits than its factorization.

320215202155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48038.

The product of its (nonzero) digits is 6000, while the sum is 28.

Adding to 320215202155 its reverse (551202512023), we get a palindrome (871417714178).

The spelling of 320215202155 in words is "three hundred twenty billion, two hundred fifteen million, two hundred two thousand, one hundred fifty-five".