20196393436 has 24 divisors (see below), whose sum is σ = 35937769616. Its totient is φ = 9929018880.

The previous prime is 20196393421. The next prime is 20196393509. The reversal of 20196393436 is 63439369102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75340 + ... + 214636.

Almost surely, 2^20196393436 is an apocalyptic number.

It is an amenable number.

20196393436 is a deficient number, since it is larger than the sum of its proper divisors (15741376180).

20196393436 is a wasteful number, since it uses less digits than its factorization.

20196393436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139909 (or 139907 counting only the distinct ones).

The product of its (nonzero) digits is 629856, while the sum is 46.

The spelling of 20196393436 in words is "twenty billion, one hundred ninety-six million, three hundred ninety-three thousand, four hundred thirty-six".