2123753647 has 2 divisors, whose sum is σ = 2123753648. Its totient is φ = 2123753646.

The previous prime is 2123753591. The next prime is 2123753663. The reversal of 2123753647 is 7463573212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2123753647 - 2¹¹ = 2123751599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2123753147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1061876823 + 1061876824.

It is an arithmetic number, because the mean of its divisors is an integer number (1061876824).

Almost surely, 2^2123753647 is an apocalyptic number.

2123753647 is a deficient number, since it is larger than the sum of its proper divisors (1).

2123753647 is an equidigital number, since it uses as much as digits as its factorization.

2123753647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 211680, while the sum is 40.

The square root of 2123753647 is about 46084.2017073096. The cubic root of 2123753647 is about 1285.3893952293.

The spelling of 2123753647 in words is "two billion, one hundred twenty-three million, seven hundred fifty-three thousand, six hundred forty-seven".