196858609512 has 128 divisors (see below), whose sum is σ = 527853542400. Its totient is φ = 60997708800.

The previous prime is 196858609481. The next prime is 196858609559. The reversal of 196858609512 is 215906858691.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6816928 + ... + 6845744.

It is an arithmetic number, because the mean of its divisors is an integer number (4123855800).

Almost surely, 2^196858609512 is an apocalyptic number.

196858609512 is a gapful number since it is divisible by the number (12) 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 196858609512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (263926771200).

196858609512 is an abundant number, since it is smaller than the sum of its proper divisors (330994932888).

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

196858609512 is a wasteful number, since it uses less digits than its factorization.

196858609512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29127 (or 29123 counting only the distinct ones).

The product of its (nonzero) digits is 9331200, while the sum is 60.

The spelling of 196858609512 in words is "one hundred ninety-six billion, eight hundred fifty-eight million, six hundred nine thousand, five hundred twelve".