20638033468 has 24 divisors (see below), whose sum is σ = 38946209792. Its totient is φ = 9512645184.

The previous prime is 20638033459. The next prime is 20638033519. The reversal of 20638033468 is 86433083602.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 222780 + ... + 301507.

Almost surely, 2^20638033468 is an apocalyptic number.

It is an amenable number.

20638033468 is a deficient number, since it is larger than the sum of its proper divisors (18308176324).

20638033468 is a wasteful number, since it uses less digits than its factorization.

20638033468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525061 (or 525059 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 43.

The spelling of 20638033468 in words is "twenty billion, six hundred thirty-eight million, thirty-three thousand, four hundred sixty-eight".