20199049939736 has 32 divisors (see below), whose sum is σ = 38162652066000. Its totient is φ = 10022392912896.

The previous prime is 20199049939721. The next prime is 20199049939753. The reversal of 20199049939736 is 63793994099102.

It is a self number, because there is not a number n which added to its sum of digits gives 20199049939736.

It is a congruent number.

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, 85760 + ... + 6356528.

Almost surely, 2^{20199049939736} is an apocalyptic number.

It is an amenable number.

20199049939736 is a deficient number, since it is larger than the sum of its proper divisors (17963602126264).

20199049939736 is a wasteful number, since it uses less digits than its factorization.

20199049939736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6273851 (or 6273847 counting only the distinct ones).

The product of its (nonzero) digits is 178564176, while the sum is 71.

The spelling of 20199049939736 in words is "twenty trillion, one hundred ninety-nine billion, forty-nine million, nine hundred thirty-nine thousand, seven hundred thirty-six".