2128955767 has 2 divisors, whose sum is σ = 2128955768. Its totient is φ = 2128955766.

The previous prime is 2128955761. The next prime is 2128955789. The reversal of 2128955767 is 7675598212.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2128955767 - 2¹¹ = 2128953719 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2128955761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1064477883 + 1064477884.

It is an arithmetic number, because the mean of its divisors is an integer number (1064477884).

Almost surely, 2^2128955767 is an apocalyptic number.

2128955767 is a deficient number, since it is larger than the sum of its proper divisors (1).

2128955767 is an equidigital number, since it uses as much as digits as its factorization.

2128955767 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2116800, while the sum is 52.

The square root of 2128955767 is about 46140.6086544163. The cubic root of 2128955767 is about 1286.4380569690.

The spelling of 2128955767 in words is "two billion, one hundred twenty-eight million, nine hundred fifty-five thousand, seven hundred sixty-seven".