2123726577 has 16 divisors (see below), whose sum is σ = 3406479360. Its totient is φ = 1149686352.

The previous prime is 2123726573. The next prime is 2123726599. The reversal of 2123726577 is 7756273212.

It is a happy number.

It is not a de Polignac number, because 2123726577 - 2² = 2123726573 is a prime.

It is a super-2 number, since 2×2123726577² = 9020429147712273858, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2123726573) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2660913 + ... + 2661710.

It is an arithmetic number, because the mean of its divisors is an integer number (212904960).

Almost surely, 2^2123726577 is an apocalyptic number.

It is an amenable number.

2123726577 is a deficient number, since it is larger than the sum of its proper divisors (1282752783).

2123726577 is a wasteful number, since it uses less digits than its factorization.

2123726577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5322652.

The product of its digits is 246960, while the sum is 42.

The square root of 2123726577 is about 46083.9080048557. The cubic root of 2123726577 is about 1285.3839338867.

Adding to 2123726577 its reverse (7756273212), we get a palindrome (9879999789).

The spelling of 2123726577 in words is "two billion, one hundred twenty-three million, seven hundred twenty-six thousand, five hundred seventy-seven".