2166750099 has 12 divisors (see below), whose sum is σ = 3130280400. Its totient is φ = 1444255344.

The previous prime is 2166750049. The next prime is 2166750119. The reversal of 2166750099 is 9900576612.

It is a happy number.

2166750099 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2166750099 - 2¹⁶ = 2166684563 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2166750049) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 47617 + ... + 81245.

It is an arithmetic number, because the mean of its divisors is an integer number (260856700).

Almost surely, 2^2166750099 is an apocalyptic number.

2166750099 is a deficient number, since it is larger than the sum of its proper divisors (963530301).

2166750099 is a wasteful number, since it uses less digits than its factorization.

2166750099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40794 (or 40791 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 45.

The square root of 2166750099 is about 46548.3630109588. The cubic root of 2166750099 is about 1294.0059552117.

The spelling of 2166750099 in words is "two billion, one hundred sixty-six million, seven hundred fifty thousand, ninety-nine".