2128369651 has 2 divisors, whose sum is σ = 2128369652. Its totient is φ = 2128369650.

The previous prime is 2128369603. The next prime is 2128369673. The reversal of 2128369651 is 1569638212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2128369651 - 2²³ = 2119981043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2128369598 and 2128369607.

It is not a weakly prime, because it can be changed into another prime (2128369951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1064184825 + 1064184826.

It is an arithmetic number, because the mean of its divisors is an integer number (1064184826).

Almost surely, 2^2128369651 is an apocalyptic number.

2128369651 is a deficient number, since it is larger than the sum of its proper divisors (1).

2128369651 is an equidigital number, since it uses as much as digits as its factorization.

2128369651 is an evil number, because the sum of its binary digits is even.

The product of its digits is 155520, while the sum is 43.

The square root of 2128369651 is about 46134.2568055453. The cubic root of 2128369651 is about 1286.3199910852.

The spelling of 2128369651 in words is "two billion, one hundred twenty-eight million, three hundred sixty-nine thousand, six hundred fifty-one".