196562895567921 has 27 divisors (see below), whose sum is σ = 286887366337611. Its totient is φ = 129688290785664.

The previous prime is 196562895567869. The next prime is 196562895567931. The reversal of 196562895567921 is 129765598265691.

The square root of 196562895567921 is 14020089.

It is a perfect power (a square), and thus also a powerful number.

196562895567921 is a `hidden beast` number, since 1 + 9 + 6 + 5 + 6 + 28 + 9 + 5 + 567 + 9 + 21 = 666.

It can be written as a sum of positive squares in only one way, i.e., 88264239959025 + 108298655608896 = 9394905^2 + 10406664^2 .

It is not a de Polignac number, because 196562895567921 - 2²⁵ = 196562862013489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (196562895567931) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 4079821810 + ... + 4079869988.

Almost surely, 2^{196562895567921} is an apocalyptic number.

196562895567921 is the 14020089-th square number.

196562895567921 is the 7010045-th centered octagonal number.

It is an amenable number.

196562895567921 is a deficient number, since it is larger than the sum of its proper divisors (90324470769690).

196562895567921 is an frugal number, since it uses more digits than its factorization.

196562895567921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96558 (or 48279 counting only the distinct ones).

The product of its digits is 4408992000, while the sum is 81.

The spelling of 196562895567921 in words is "one hundred ninety-six trillion, five hundred sixty-two billion, eight hundred ninety-five million, five hundred sixty-seven thousand, nine hundred twenty-one".