19797696000 has 960 divisors, whose sum is σ = 79002443520. Its totient is φ = 4926873600.

The previous prime is 19797695999. The next prime is 19797696031. The reversal of 19797696000 is 69679791.

It is a tau number, because it is divible by the number of its divisors (960).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 295487967 + ... + 295488033.

It is an arithmetic number, because the mean of its divisors is an integer number (82294212).

Almost surely, 2^19797696000 is an apocalyptic number.

19797696000 is a gapful number since it is divisible by the number (10) 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 19797696000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39501221760).

19797696000 is an abundant number, since it is smaller than the sum of its proper divisors (59204747520).

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

19797696000 is an frugal number, since it uses more digits than its factorization.

19797696000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134 (or 96 counting only the distinct ones).

The product of its (nonzero) digits is 1285956, while the sum is 54.

The spelling of 19797696000 in words is "nineteen billion, seven hundred ninety-seven million, six hundred ninety-six thousand".