41545614515081 has 2 divisors, whose sum is σ = 41545614515082. Its totient is φ = 41545614515080.

The previous prime is 41545614515077. The next prime is 41545614515213. The reversal of 41545614515081 is 18051541654514.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25139744742025 + 16405869773056 = 5013955^2 + 4050416^2 .

It is a cyclic number.

It is not a de Polignac number, because 41545614515081 - 2² = 41545614515077 is a prime.

It is a super-2 number, since 2×41545614515081² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (41545614515381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20772807257540 + 20772807257541.

It is an arithmetic number, because the mean of its divisors is an integer number (20772807257541).

Almost surely, 2^{41545614515081} is an apocalyptic number.

It is an amenable number.

41545614515081 is a deficient number, since it is larger than the sum of its proper divisors (1).

41545614515081 is an equidigital number, since it uses as much as digits as its factorization.

41545614515081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1920000, while the sum is 50.

The spelling of 41545614515081 in words is "forty-one trillion, five hundred forty-five billion, six hundred fourteen million, five hundred fifteen thousand, eighty-one".