196190840521 has 16 divisors (see below), whose sum is σ = 218364023808. Its totient is φ = 175043563200.

The previous prime is 196190840501. The next prime is 196190840533. The reversal of 196190840521 is 125048091691.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-196190840521 is a prime.

It is not an unprimeable number, because it can be changed into a prime (196190840501) 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, 34380 + ... + 627346.

It is an arithmetic number, because the mean of its divisors is an integer number (13647751488).

Almost surely, 2^196190840521 is an apocalyptic number.

It is an amenable number.

196190840521 is a deficient number, since it is larger than the sum of its proper divisors (22173183287).

196190840521 is a wasteful number, since it uses less digits than its factorization.

196190840521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 593832.

The product of its (nonzero) digits is 155520, while the sum is 46.

The spelling of 196190840521 in words is "one hundred ninety-six billion, one hundred ninety million, eight hundred forty thousand, five hundred twenty-one".