19469688012 has 192 divisors, whose sum is σ = 53613342720. Its totient is φ = 6101222400.

The previous prime is 19469687987. The next prime is 19469688031. The reversal of 19469688012 is 21088696491.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 19469688012.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 20050687 + ... + 20051657.

It is an arithmetic number, because the mean of its divisors is an integer number (279236160).

Almost surely, 2^19469688012 is an apocalyptic number.

19469688012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19469688012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26806671360).

19469688012 is an abundant number, since it is smaller than the sum of its proper divisors (34143654708).

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

19469688012 is a wasteful number, since it uses less digits than its factorization.

19469688012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1181 (or 1173 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 54.

The spelling of 19469688012 in words is "nineteen billion, four hundred sixty-nine million, six hundred eighty-eight thousand, twelve".