320155005535 has 16 divisors (see below), whose sum is σ = 394101021600. Its totient is φ = 249543705600.

The previous prime is 320155005491. The next prime is 320155005551. The reversal of 320155005535 is 535500551023.

It is not a de Polignac number, because 320155005535 - 2¹³ = 320154997343 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 320155005535.

It is a congruent 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, 1770510 + ... + 1942939.

It is an arithmetic number, because the mean of its divisors is an integer number (24631313850).

Almost surely, 2^320155005535 is an apocalyptic number.

320155005535 is a deficient number, since it is larger than the sum of its proper divisors (73946016065).

320155005535 is a wasteful number, since it uses less digits than its factorization.

320155005535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3713898.

The product of its (nonzero) digits is 56250, while the sum is 34.

Adding to 320155005535 its reverse (535500551023), we get a palindrome (855655556558).

The spelling of 320155005535 in words is "three hundred twenty billion, one hundred fifty-five million, five thousand, five hundred thirty-five".