41661555101 has 4 divisors (see below), whose sum is σ = 42163501632. Its totient is φ = 41159608572.

The previous prime is 41661555097. The next prime is 41661555139. The reversal of 41661555101 is 10155516614.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 41661555101 - 2² = 41661555097 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (41661555161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 250973141 + ... + 250973306.

It is an arithmetic number, because the mean of its divisors is an integer number (10540875408).

Almost surely, 2^41661555101 is an apocalyptic number.

It is an amenable number.

41661555101 is a deficient number, since it is larger than the sum of its proper divisors (501946531).

41661555101 is an equidigital number, since it uses as much as digits as its factorization.

41661555101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501946530.

The product of its (nonzero) digits is 18000, while the sum is 35.

The spelling of 41661555101 in words is "forty-one billion, six hundred sixty-one million, five hundred fifty-five thousand, one hundred one".