41643662465 has 8 divisors (see below), whose sum is σ = 49977587688. Its totient is φ = 33311468160.

The previous prime is 41643662453. The next prime is 41643662491. The reversal of 41643662465 is 56426634614.

It can be written as a sum of positive squares in 4 ways, for example, as 20435274304 + 21208388161 = 142952^2 + 145631^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 41643662465 - 2¹² = 41643658369 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 379196 + ... + 476525.

It is an arithmetic number, because the mean of its divisors is an integer number (6247198461).

Almost surely, 2^41643662465 is an apocalyptic number.

It is an amenable number.

41643662465 is a deficient number, since it is larger than the sum of its proper divisors (8333925223).

41643662465 is an equidigital number, since it uses as much as digits as its factorization.

41643662465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 865459.

The product of its digits is 2488320, while the sum is 47.

The spelling of 41643662465 in words is "forty-one billion, six hundred forty-three million, six hundred sixty-two thousand, four hundred sixty-five".