196357021689 has 16 divisors (see below), whose sum is σ = 262691208000. Its totient is φ = 130464423936.

The previous prime is 196357021673. The next prime is 196357021711. The reversal of 196357021689 is 986120753691.

It is not a de Polignac number, because 196357021689 - 2⁴ = 196357021673 is a prime.

It is not an unprimeable number, because it can be changed into a prime (196357021669) 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, 1106857 + ... + 1271945.

It is an arithmetic number, because the mean of its divisors is an integer number (16418200500).

Almost surely, 2^196357021689 is an apocalyptic number.

It is an amenable number.

196357021689 is a deficient number, since it is larger than the sum of its proper divisors (66334186311).

196357021689 is a wasteful number, since it uses less digits than its factorization.

196357021689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166424.

The product of its (nonzero) digits is 4898880, while the sum is 57.

The spelling of 196357021689 in words is "one hundred ninety-six billion, three hundred fifty-seven million, twenty-one thousand, six hundred eighty-nine".