196234210640 has 80 divisors (see below), whose sum is σ = 491939430528. Its totient is φ = 72367354368.

The previous prime is 196234210589. The next prime is 196234210643. The reversal of 196234210640 is 46012432691.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 196234210594 and 196234210603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196234210643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 741287 + ... + 970553.

Almost surely, 2^196234210640 is an apocalyptic number.

196234210640 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 196234210640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (245969715264).

196234210640 is an abundant number, since it is smaller than the sum of its proper divisors (295705219888).

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

196234210640 is a wasteful number, since it uses less digits than its factorization.

196234210640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230116 (or 230110 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 38.

The spelling of 196234210640 in words is "one hundred ninety-six billion, two hundred thirty-four million, two hundred ten thousand, six hundred forty".