19716776148828 has 24 divisors (see below), whose sum is σ = 50188157470080. Its totient is φ = 5974780651120.

The previous prime is 19716776148827. The next prime is 19716776148833. The reversal of 19716776148828 is 82884167761791.

It is a self number, because there is not a number n which added to its sum of digits gives 19716776148828.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19716776148827) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74684758008 + ... + 74684758271.

It is an arithmetic number, because the mean of its divisors is an integer number (2091173227920).

Almost surely, 2^{19716776148828} is an apocalyptic number.

It is an amenable number.

19716776148828 is an abundant number, since it is smaller than the sum of its proper divisors (30471381321252).

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

19716776148828 is a wasteful number, since it uses less digits than its factorization.

19716776148828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149369516297 (or 149369516295 counting only the distinct ones).

The product of its digits is 455196672, while the sum is 75.

The spelling of 19716776148828 in words is "nineteen trillion, seven hundred sixteen billion, seven hundred seventy-six million, one hundred forty-eight thousand, eight hundred twenty-eight".