196499685888 has 200 divisors, whose sum is σ = 639819473040. Its totient is φ = 59545221120.

The previous prime is 196499685881. The next prime is 196499685913. The reversal of 196499685888 is 888586994691.

196499685888 is a `hidden beast` number, since 19 + 6 + 499 + 68 + 58 + 8 + 8 = 666.

It is a super-2 number, since 2×196499685888² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (81).

It is not an unprimeable number, because it can be changed into a prime (196499685881) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 240823 + ... + 671561.

Almost surely, 2^196499685888 is an apocalyptic number.

196499685888 is a gapful number since it is divisible by the number (18) 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 196499685888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (319909736520).

196499685888 is an abundant number, since it is smaller than the sum of its proper divisors (443319787152).

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

196499685888 is an equidigital number, since it uses as much as digits as its factorization.

196499685888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430780 (or 430755 counting only the distinct ones).

The product of its digits is 2149908480, while the sum is 81.

The spelling of 196499685888 in words is "one hundred ninety-six billion, four hundred ninety-nine million, six hundred eighty-five thousand, eight hundred eighty-eight".