20665234130 has 16 divisors (see below), whose sum is σ = 37807216344. Its totient is φ = 8130583680.

The previous prime is 20665234129. The next prime is 20665234169. The reversal of 20665234130 is 3143256602.

It can be written as a sum of positive squares in 4 ways, for example, as 6220319161 + 14444914969 = 78869^2 + 120187^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16938107 + ... + 16939326.

Almost surely, 2^20665234130 is an apocalyptic number.

20665234130 is a deficient number, since it is larger than the sum of its proper divisors (17141982214).

20665234130 is a wasteful number, since it uses less digits than its factorization.

20665234130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33877501.

The product of its (nonzero) digits is 25920, while the sum is 32.

The spelling of 20665234130 in words is "twenty billion, six hundred sixty-five million, two hundred thirty-four thousand, one hundred thirty".