486195772391 has 4 divisors (see below), whose sum is σ = 555652311312. Its totient is φ = 416739233472.

The previous prime is 486195772339. The next prime is 486195772417. The reversal of 486195772391 is 193277591684.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-486195772391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (486195772301) 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 in 3 ways as a sum of consecutive naturals, for example, 34728269450 + ... + 34728269463.

It is an arithmetic number, because the mean of its divisors is an integer number (138913077828).

Almost surely, 2^486195772391 is an apocalyptic number.

486195772391 is a deficient number, since it is larger than the sum of its proper divisors (69456538921).

486195772391 is an equidigital number, since it uses as much as digits as its factorization.

486195772391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69456538920.

The product of its digits is 22861440, while the sum is 62.

The spelling of 486195772391 in words is "four hundred eighty-six billion, one hundred ninety-five million, seven hundred seventy-two thousand, three hundred ninety-one".