811461782361 has 8 divisors (see below), whose sum is σ = 1084849712320. Its totient is φ = 539524186992.

The previous prime is 811461782347. The next prime is 811461782377. The reversal of 811461782361 is 163287164118.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 811461782361 - 2⁶ = 811461782297 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 811461782361.

It is not an unprimeable number, because it can be changed into a prime (811461702361) 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 7 ways as a sum of consecutive naturals, for example, 362582341 + ... + 362584578.

It is an arithmetic number, because the mean of its divisors is an integer number (135606214040).

Almost surely, 2^811461782361 is an apocalyptic number.

It is an amenable number.

811461782361 is a deficient number, since it is larger than the sum of its proper divisors (273387929959).

811461782361 is a wasteful number, since it uses less digits than its factorization.

811461782361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 725167295.

The product of its digits is 387072, while the sum is 48.

The spelling of 811461782361 in words is "eight hundred eleven billion, four hundred sixty-one million, seven hundred eighty-two thousand, three hundred sixty-one".