8477350643081 has 2 divisors, whose sum is σ = 8477350643082. Its totient is φ = 8477350643080.

The previous prime is 8477350643059. The next prime is 8477350643087. The reversal of 8477350643081 is 1803460537748.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8400519673225 + 76830969856 = 2898365^2 + 277184^2 .

It is a cyclic number.

It is not a de Polignac number, because 8477350643081 - 2¹⁸ = 8477350380937 is a prime.

It is a super-2 number, since 2×8477350643081² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8477350643087) 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, 4238675321540 + 4238675321541.

It is an arithmetic number, because the mean of its divisors is an integer number (4238675321541).

Almost surely, 2^{8477350643081} is an apocalyptic number.

It is an amenable number.

8477350643081 is a deficient number, since it is larger than the sum of its proper divisors (1).

8477350643081 is an equidigital number, since it uses as much as digits as its factorization.

8477350643081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13547520, while the sum is 56.

The spelling of 8477350643081 in words is "eight trillion, four hundred seventy-seven billion, three hundred fifty million, six hundred forty-three thousand, eighty-one".