41485979921 has 2 divisors, whose sum is σ = 41485979922. Its totient is φ = 41485979920.

The previous prime is 41485979917. The next prime is 41485979947. The reversal of 41485979921 is 12997958414.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35094776896 + 6391203025 = 187336^2 + 79945^2 .

It is a cyclic number.

It is not a de Polignac number, because 41485979921 - 2² = 41485979917 is a prime.

It is not a weakly prime, because it can be changed into another prime (41485979321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20742989960 + 20742989961.

It is an arithmetic number, because the mean of its divisors is an integer number (20742989961).

Almost surely, 2^41485979921 is an apocalyptic number.

It is an amenable number.

41485979921 is a deficient number, since it is larger than the sum of its proper divisors (1).

41485979921 is an equidigital number, since it uses as much as digits as its factorization.

41485979921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6531840, while the sum is 59.

The spelling of 41485979921 in words is "forty-one billion, four hundred eighty-five million, nine hundred seventy-nine thousand, nine hundred twenty-one".