2120917875 has 64 divisors (see below), whose sum is σ = 3750230016. Its totient is φ = 1060800000.

The previous prime is 2120917873. The next prime is 2120917891. The reversal of 2120917875 is 5787190212.

It is not a de Polignac number, because 2120917875 - 2¹ = 2120917873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2120917873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2823750 + ... + 2824500.

It is an arithmetic number, because the mean of its divisors is an integer number (58597344).

Almost surely, 2^2120917875 is an apocalyptic number.

2120917875 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2120917875 is a deficient number, since it is larger than the sum of its proper divisors (1629312141).

2120917875 is a wasteful number, since it uses less digits than its factorization.

2120917875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1229 (or 1219 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 42.

The square root of 2120917875 is about 46053.4241397966. The cubic root of 2120917875 is about 1284.8170289627.

The spelling of 2120917875 in words is "two billion, one hundred twenty million, nine hundred seventeen thousand, eight hundred seventy-five".