41661636573 has 4 divisors (see below), whose sum is σ = 55548848768. Its totient is φ = 27774424380.

The previous prime is 41661636571. The next prime is 41661636587. The reversal of 41661636573 is 37563616614.

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 not a de Polignac number, because 41661636573 - 2¹ = 41661636571 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 (41661636571) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6943606093 + ... + 6943606098.

It is an arithmetic number, because the mean of its divisors is an integer number (13887212192).

Almost surely, 2^41661636573 is an apocalyptic number.

It is an amenable number.

41661636573 is a deficient number, since it is larger than the sum of its proper divisors (13887212195).

41661636573 is a wasteful number, since it uses less digits than its factorization.

41661636573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13887212194.

The product of its digits is 1632960, while the sum is 48.

The spelling of 41661636573 in words is "forty-one billion, six hundred sixty-one million, six hundred thirty-six thousand, five hundred seventy-three".