804675561181 has 2 divisors, whose sum is σ = 804675561182. Its totient is φ = 804675561180.

The previous prime is 804675561139. The next prime is 804675561191. The reversal of 804675561181 is 181165576408.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 429635677156 + 375039884025 = 655466^2 + 612405^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-804675561181 is a prime.

It is a super-2 number, since 2×804675561181² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (804675561191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 402337780590 + 402337780591.

It is an arithmetic number, because the mean of its divisors is an integer number (402337780591).

Almost surely, 2^804675561181 is an apocalyptic number.

It is an amenable number.

804675561181 is a deficient number, since it is larger than the sum of its proper divisors (1).

804675561181 is an equidigital number, since it uses as much as digits as its factorization.

804675561181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1612800, while the sum is 52.

The spelling of 804675561181 in words is "eight hundred four billion, six hundred seventy-five million, five hundred sixty-one thousand, one hundred eighty-one".