20196619849468 has 6 divisors (see below), whose sum is σ = 35344084736576. Its totient is φ = 10098309924732.

The previous prime is 20196619849457. The next prime is 20196619849481. The reversal of 20196619849468 is 86494891669102.

It is a self number, because there is not a number n which added to its sum of digits gives 20196619849468.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2524577481180 + ... + 2524577481187.

Almost surely, 2^{20196619849468} is an apocalyptic number.

It is an amenable number.

20196619849468 is a deficient number, since it is larger than the sum of its proper divisors (15147464887108).

20196619849468 is a wasteful number, since it uses less digits than its factorization.

20196619849468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5049154962371 (or 5049154962369 counting only the distinct ones).

The product of its (nonzero) digits is 322486272, while the sum is 73.

The spelling of 20196619849468 in words is "twenty trillion, one hundred ninety-six billion, six hundred nineteen million, eight hundred forty-nine thousand, four hundred sixty-eight".