41400865777 has 2 divisors, whose sum is σ = 41400865778. Its totient is φ = 41400865776.

The previous prime is 41400865747. The next prime is 41400865817. The reversal of 41400865777 is 77756800414.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22680058801 + 18720806976 = 150599^2 + 136824^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-41400865777 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 41400865777.

It is not a weakly prime, because it can be changed into another prime (41400865747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20700432888 + 20700432889.

It is an arithmetic number, because the mean of its divisors is an integer number (20700432889).

Almost surely, 2^41400865777 is an apocalyptic number.

It is an amenable number.

41400865777 is a deficient number, since it is larger than the sum of its proper divisors (1).

41400865777 is an equidigital number, since it uses as much as digits as its factorization.

41400865777 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1317120, while the sum is 49.

The spelling of 41400865777 in words is "forty-one billion, four hundred million, eight hundred sixty-five thousand, seven hundred seventy-seven".