999331975255 has 8 divisors (see below), whose sum is σ = 1202046825024. Its totient is φ = 797566610400.

The previous prime is 999331975241. The next prime is 999331975309. The reversal of 999331975255 is 552579133999.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 999331975255 - 2²⁹ = 998795104343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 237368911 + ... + 237373120.

It is an arithmetic number, because the mean of its divisors is an integer number (150255853128).

Almost surely, 2^999331975255 is an apocalyptic number.

999331975255 is a deficient number, since it is larger than the sum of its proper divisors (202714849769).

999331975255 is a wasteful number, since it uses less digits than its factorization.

999331975255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474742457.

The product of its digits is 103335750, while the sum is 67.

The spelling of 999331975255 in words is "nine hundred ninety-nine billion, three hundred thirty-one million, nine hundred seventy-five thousand, two hundred fifty-five".