2128155067 has 4 divisors (see below), whose sum is σ = 2129055016. Its totient is φ = 2127255120.

The previous prime is 2128155041. The next prime is 2128155077. The reversal of 2128155067 is 7605518212.

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 2128155067 - 2¹¹ = 2128153019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2128155037) 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 3 ways as a sum of consecutive naturals, for example, 446418 + ... + 451159.

It is an arithmetic number, because the mean of its divisors is an integer number (532263754).

Almost surely, 2^2128155067 is an apocalyptic number.

2128155067 is a deficient number, since it is larger than the sum of its proper divisors (899949).

2128155067 is an equidigital number, since it uses as much as digits as its factorization.

2128155067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 899948.

The product of its (nonzero) digits is 33600, while the sum is 37.

The square root of 2128155067 is about 46131.9310998358. The cubic root of 2128155067 is about 1286.2767603482.

The spelling of 2128155067 in words is "two billion, one hundred twenty-eight million, one hundred fifty-five thousand, sixty-seven".