2154068811 has 12 divisors (see below), whose sum is σ = 3115944520. Its totient is φ = 1433963520.

The previous prime is 2154068753. The next prime is 2154068837. The reversal of 2154068811 is 1188604512.

2154068811 is a `hidden beast` number, since 21 + 540 + 6 + 88 + 11 = 666.

It is not a de Polignac number, because 2154068811 - 2⁹ = 2154068299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2154068881) 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, 166966 + ... + 179403.

Almost surely, 2^2154068811 is an apocalyptic number.

2154068811 is a deficient number, since it is larger than the sum of its proper divisors (961875709).

2154068811 is a wasteful number, since it uses less digits than its factorization.

2154068811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347066 (or 347063 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 36.

The square root of 2154068811 is about 46411.9468563860. The cubic root of 2154068811 is about 1291.4765479700.

The spelling of 2154068811 in words is "two billion, one hundred fifty-four million, sixty-eight thousand, eight hundred eleven".