20633634234 has 12 divisors (see below), whose sum is σ = 44706207546. Its totient is φ = 6877878072.

The previous prime is 20633634223. The next prime is 20633634289. The reversal of 20633634234 is 43243633602.

20633634234 is a `hidden beast` number, since 2 + 0 + 63 + 363 + 4 + 234 = 666.

It can be written as a sum of positive squares in only one way, i.e., 15872220225 + 4761414009 = 125985^2 + 69003^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 573156489 + ... + 573156524.

Almost surely, 2^20633634234 is an apocalyptic number.

20633634234 is an abundant number, since it is smaller than the sum of its proper divisors (24072573312).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20633634234 is a wasteful number, since it uses less digits than its factorization.

20633634234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1146313021 (or 1146313018 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 36.

The spelling of 20633634234 in words is "twenty billion, six hundred thirty-three million, six hundred thirty-four thousand, two hundred thirty-four".