196439507999 has 24 divisors (see below), whose sum is σ = 232630131888. Its totient is φ = 165368286720.

The previous prime is 196439507977. The next prime is 196439508037. The reversal of 196439507999 is 999705934691.

It is not a de Polignac number, because 196439507999 - 2⁸ = 196439507743 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196439507599) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 464897 + ... + 780389.

It is an arithmetic number, because the mean of its divisors is an integer number (9692922162).

Almost surely, 2^196439507999 is an apocalyptic number.

196439507999 is a deficient number, since it is larger than the sum of its proper divisors (36190623889).

196439507999 is a wasteful number, since it uses less digits than its factorization.

196439507999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315735 (or 315728 counting only the distinct ones).

The product of its (nonzero) digits is 148803480, while the sum is 71.

The spelling of 196439507999 in words is "one hundred ninety-six billion, four hundred thirty-nine million, five hundred seven thousand, nine hundred ninety-nine".