41561021377807 has 2 divisors, whose sum is σ = 41561021377808. Its totient is φ = 41561021377806.

The previous prime is 41561021377789. The next prime is 41561021377819. The reversal of 41561021377807 is 70877312016514.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 41561021377807 - 2³¹ = 41558873894159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (41561021377607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20780510688903 + 20780510688904.

It is an arithmetic number, because the mean of its divisors is an integer number (20780510688904).

Almost surely, 2^{41561021377807} is an apocalyptic number.

41561021377807 is a deficient number, since it is larger than the sum of its proper divisors (1).

41561021377807 is an equidigital number, since it uses as much as digits as its factorization.

41561021377807 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1975680, while the sum is 52.

The spelling of 41561021377807 in words is "forty-one trillion, five hundred sixty-one billion, twenty-one million, three hundred seventy-seven thousand, eight hundred seven".