41405611613881 has 2 divisors, whose sum is σ = 41405611613882. Its totient is φ = 41405611613880.

The previous prime is 41405611613833. The next prime is 41405611613923. The reversal of 41405611613881 is 18831611650414.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38900169000000 + 2505442613881 = 6237000^2 + 1582859^2 .

It is a cyclic number.

It is not a de Polignac number, because 41405611613881 - 2⁷ = 41405611613753 is a prime.

It is a super-2 number, since 2×41405611613881² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (41405611613801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20702805806940 + 20702805806941.

It is an arithmetic number, because the mean of its divisors is an integer number (20702805806941).

Almost surely, 2^{41405611613881} is an apocalyptic number.

It is an amenable number.

41405611613881 is a deficient number, since it is larger than the sum of its proper divisors (1).

41405611613881 is an equidigital number, since it uses as much as digits as its factorization.

41405611613881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 552960, while the sum is 49.

The spelling of 41405611613881 in words is "forty-one trillion, four hundred five billion, six hundred eleven million, six hundred thirteen thousand, eight hundred eighty-one".