196632817909 has 16 divisors (see below), whose sum is σ = 216759628800. Its totient is φ = 176884994160.

The previous prime is 196632817903. The next prime is 196632817943. The reversal of 196632817909 is 909718236691.

It is a cyclic number.

It is not a de Polignac number, because 196632817909 - 2⁵ = 196632817877 is a prime.

It is a super-2 number, since 2×196632817909² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196632817903) 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, 944692 + ... + 1133890.

It is an arithmetic number, because the mean of its divisors is an integer number (13547476800).

Almost surely, 2^196632817909 is an apocalyptic number.

It is an amenable number.

196632817909 is a deficient number, since it is larger than the sum of its proper divisors (20126810891).

196632817909 is a wasteful number, since it uses less digits than its factorization.

196632817909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190200.

The product of its (nonzero) digits is 8817984, while the sum is 61.

The spelling of 196632817909 in words is "one hundred ninety-six billion, six hundred thirty-two million, eight hundred seventeen thousand, nine hundred nine".