41156643977 has 2 divisors, whose sum is σ = 41156643978. Its totient is φ = 41156643976.

The previous prime is 41156643949. The next prime is 41156644091. The reversal of 41156643977 is 77934665114.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36770363536 + 4386280441 = 191756^2 + 66229^2 .

It is a cyclic number.

It is not a de Polignac number, because 41156643977 - 2⁸ = 41156643721 is a prime.

It is not a weakly prime, because it can be changed into another prime (41156642977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20578321988 + 20578321989.

It is an arithmetic number, because the mean of its divisors is an integer number (20578321989).

Almost surely, 2^41156643977 is an apocalyptic number.

It is an amenable number.

41156643977 is a deficient number, since it is larger than the sum of its proper divisors (1).

41156643977 is an equidigital number, since it uses as much as digits as its factorization.

41156643977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3810240, while the sum is 53.

The spelling of 41156643977 in words is "forty-one billion, one hundred fifty-six million, six hundred forty-three thousand, nine hundred seventy-seven".