20196619849448 has 16 divisors (see below), whose sum is σ = 43278471106080. Its totient is φ = 8655694221168.

The previous prime is 20196619849447. The next prime is 20196619849451. The reversal of 20196619849448 is 84494891669102.

It is a Smith number, since the sum of its digits (71) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (20196619849447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 180326962886 + ... + 180326962997.

It is an arithmetic number, because the mean of its divisors is an integer number (2704904444130).

Almost surely, 2^{20196619849448} is an apocalyptic number.

20196619849448 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20196619849448 is an abundant number, since it is smaller than the sum of its proper divisors (23081851256632).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20196619849448 is a wasteful number, since it uses less digits than its factorization.

20196619849448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360653925896 (or 360653925892 counting only the distinct ones).

The product of its (nonzero) digits is 214990848, while the sum is 71.

The spelling of 20196619849448 in words is "twenty trillion, one hundred ninety-six billion, six hundred nineteen million, eight hundred forty-nine thousand, four hundred forty-eight".