19698129024 has 192 divisors, whose sum is σ = 63524832960. Its totient is φ = 5296766976.

The previous prime is 19698129001. The next prime is 19698129043. The reversal of 19698129024 is 42092189691.

It is a tau number, because it is divible by the number of its divisors (192).

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 764154 + ... + 789510.

It is an arithmetic number, because the mean of its divisors is an integer number (330858505).

Almost surely, 2^19698129024 is an apocalyptic number.

19698129024 is a gapful number since it is divisible by the number (14) 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 19698129024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31762416480).

19698129024 is an abundant number, since it is smaller than the sum of its proper divisors (43826703936).

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

19698129024 is a wasteful number, since it uses less digits than its factorization.

19698129024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25415 (or 25386 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 51.

The spelling of 19698129024 in words is "nineteen billion, six hundred ninety-eight million, one hundred twenty-nine thousand, twenty-four".