2123664026 has 32 divisors (see below), whose sum is σ = 3648646080. Its totient is φ = 918086400.

The previous prime is 2123664019. The next prime is 2123664041. The reversal of 2123664026 is 6204663212.

It is a junction number, because it is equal to n+sod(n) for n = 2123663983 and 2123664001.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17906 + ... + 67586.

It is an arithmetic number, because the mean of its divisors is an integer number (114020190).

Almost surely, 2^2123664026 is an apocalyptic number.

2123664026 is a deficient number, since it is larger than the sum of its proper divisors (1524982054).

2123664026 is a wasteful number, since it uses less digits than its factorization.

2123664026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49790.

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 2123664026 is about 46083.2293356271. The cubic root of 2123664026 is about 1285.3713141140.

The spelling of 2123664026 in words is "two billion, one hundred twenty-three million, six hundred sixty-four thousand, twenty-six".