19704685000 has 640 divisors, whose sum is σ = 64491356160. Its totient is φ = 5443200000.

The previous prime is 19704684997. The next prime is 19704685001. The reversal of 19704685000 is 58640791.

It is a super-2 number, since 2×19704685000² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (19704685001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 155154937 + ... + 155155063.

It is an arithmetic number, because the mean of its divisors is an integer number (100767744).

Almost surely, 2^19704685000 is an apocalyptic number.

19704685000 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 19704685000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32245678080).

19704685000 is an abundant number, since it is smaller than the sum of its proper divisors (44786671160).

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

19704685000 is a wasteful number, since it uses less digits than its factorization.

19704685000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215 (or 196 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 40.

The spelling of 19704685000 in words is "nineteen billion, seven hundred four million, six hundred eighty-five thousand".