19902116836984 has 16 divisors (see below), whose sum is σ = 37321316109000. Its totient is φ = 9949765874592.

The previous prime is 19902116836933. The next prime is 19902116837011. The reversal of 19902116836984 is 48963861120991.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 161502547 + ... + 161625730.

Almost surely, 2^{19902116836984} is an apocalyptic number.

It is an amenable number.

19902116836984 is a deficient number, since it is larger than the sum of its proper divisors (17419199272016).

19902116836984 is a wasteful number, since it uses less digits than its factorization.

19902116836984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323135982 (or 323135978 counting only the distinct ones).

The product of its (nonzero) digits is 40310784, while the sum is 67.

The spelling of 19902116836984 in words is "nineteen trillion, nine hundred two billion, one hundred sixteen million, eight hundred thirty-six thousand, nine hundred eighty-four".