2169112331958 has 48 divisors (see below), whose sum is σ = 5135266598448. Its totient is φ = 606744705600.

The previous prime is 2169112331861. The next prime is 2169112331959. The reversal of 2169112331958 is 8591332119612.

It is a super-2 number, since 2×2169112331958² (a number of 25 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 2169112331958.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2169112331959) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 114904333 + ... + 114923208.

It is an arithmetic number, because the mean of its divisors is an integer number (106984720801).

Almost surely, 2^{2169112331958} is an apocalyptic number.

2169112331958 is an abundant number, since it is smaller than the sum of its proper divisors (2966154266490).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2169112331958 is a wasteful number, since it uses less digits than its factorization.

2169112331958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229827581 (or 229827570 counting only the distinct ones).

The product of its digits is 699840, while the sum is 51.

The spelling of 2169112331958 in words is "two trillion, one hundred sixty-nine billion, one hundred twelve million, three hundred thirty-one thousand, nine hundred fifty-eight".