820263197193 has 16 divisors (see below), whose sum is σ = 1195827916800. Its totient is φ = 495996788880.

The previous prime is 820263197137. The next prime is 820263197231. The reversal of 820263197193 is 391791362028.

It is not a de Polignac number, because 820263197193 - 2²⁹ = 819726326281 is a prime.

It is not an unprimeable number, because it can be changed into a prime (820263197893) 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, 28295833 + ... + 28324806.

It is an arithmetic number, because the mean of its divisors is an integer number (74739244800).

Almost surely, 2^820263197193 is an apocalyptic number.

It is an amenable number.

820263197193 is a deficient number, since it is larger than the sum of its proper divisors (375564719607).

820263197193 is a wasteful number, since it uses less digits than its factorization.

820263197193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56621092.

The product of its (nonzero) digits is 979776, while the sum is 51.

The spelling of 820263197193 in words is "eight hundred twenty billion, two hundred sixty-three million, one hundred ninety-seven thousand, one hundred ninety-three".