643315165213241 has 8 divisors (see below), whose sum is σ = 644785801176000. Its totient is φ = 641844553003920.

The previous prime is 643315165213211. The next prime is 643315165213267. The reversal of 643315165213241 is 142312561513346.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 643315165213241 - 2²⁶ = 643315098104377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (643315165213211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48867071 + ... + 60618651.

It is an arithmetic number, because the mean of its divisors is an integer number (80598225147000).

Almost surely, 2^{643315165213241} is an apocalyptic number.

It is an amenable number.

643315165213241 is a deficient number, since it is larger than the sum of its proper divisors (1470635962759).

643315165213241 is a wasteful number, since it uses less digits than its factorization.

643315165213241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11876719.

The product of its digits is 1555200, while the sum is 47.

The spelling of 643315165213241 in words is "six hundred forty-three trillion, three hundred fifteen billion, one hundred sixty-five million, two hundred thirteen thousand, two hundred forty-one".