19697448960 has 576 divisors, whose sum is σ = 82177804800. Its totient is φ = 4262658048.

The previous prime is 19697448959. The next prime is 19697448961. The reversal of 19697448960 is 6984479691.

19697448960 is a `hidden beast` number, since 1 + 9 + 6 + 97 + 4 + 489 + 60 = 666.

It is an interprime number because it is at equal distance from previous prime (19697448959) and next prime (19697448961).

It is a tau number, because it is divible by the number of its divisors (576).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19697448961) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12256477 + ... + 12258083.

It is an arithmetic number, because the mean of its divisors is an integer number (142669800).

Almost surely, 2^19697448960 is an apocalyptic number.

19697448960 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 19697448960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41088902400).

19697448960 is an abundant number, since it is smaller than the sum of its proper divisors (62480355840).

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

19697448960 is a wasteful number, since it uses less digits than its factorization.

19697448960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1666 (or 1643 counting only the distinct ones).

The product of its (nonzero) digits is 23514624, while the sum is 63.

The spelling of 19697448960 in words is "nineteen billion, six hundred ninety-seven million, four hundred forty-eight thousand, nine hundred sixty".