2159668051 has 4 divisors (see below), whose sum is σ = 2185688232. Its totient is φ = 2133647872.

The previous prime is 2159668039. The next prime is 2159668057. The reversal of 2159668051 is 1508669512.

2159668051 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2159668051 - 2²⁹ = 1622797139 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2159667989 and 2159668007.

It is not an unprimeable number, because it can be changed into a prime (2159668057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13009966 + ... + 13010131.

It is an arithmetic number, because the mean of its divisors is an integer number (546422058).

Almost surely, 2^2159668051 is an apocalyptic number.

2159668051 is a deficient number, since it is larger than the sum of its proper divisors (26020181).

2159668051 is an equidigital number, since it uses as much as digits as its factorization.

2159668051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26020180.

The product of its (nonzero) digits is 129600, while the sum is 43.

The square root of 2159668051 is about 46472.2288146372. The cubic root of 2159668051 is about 1292.5945918821.

The spelling of 2159668051 in words is "two billion, one hundred fifty-nine million, six hundred sixty-eight thousand, fifty-one".