198676262233577 has 2 divisors, whose sum is σ = 198676262233578. Its totient is φ = 198676262233576.

The previous prime is 198676262233573. The next prime is 198676262233639. The reversal of 198676262233577 is 775332262676891.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 191873028126976 + 6803234106601 = 13851824^2 + 2608301^2 .

It is a cyclic number.

It is not a de Polignac number, because 198676262233577 - 2² = 198676262233573 is a prime.

It is not a weakly prime, because it can be changed into another prime (198676262233571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99338131116788 + 99338131116789.

It is an arithmetic number, because the mean of its divisors is an integer number (99338131116789).

Almost surely, 2^{198676262233577} is an apocalyptic number.

It is an amenable number.

198676262233577 is a deficient number, since it is larger than the sum of its proper divisors (1).

198676262233577 is an equidigital number, since it uses as much as digits as its factorization.

198676262233577 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1920360960, while the sum is 74.

The spelling of 198676262233577 in words is "one hundred ninety-eight trillion, six hundred seventy-six billion, two hundred sixty-two million, two hundred thirty-three thousand, five hundred seventy-seven".