641168423503 has 4 divisors (see below), whose sum is σ = 641420556768. Its totient is φ = 640916290240.

The previous prime is 641168423477. The next prime is 641168423527. The reversal of 641168423503 is 305324861146.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 641168423503 - 2⁹ = 641168422991 is a prime.

It is a super-2 number, since 2×641168423503² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 641168423503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641168423573) 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, 126062818 + ... + 126067903.

It is an arithmetic number, because the mean of its divisors is an integer number (160355139192).

Almost surely, 2^641168423503 is an apocalyptic number.

641168423503 is a deficient number, since it is larger than the sum of its proper divisors (252133265).

641168423503 is a wasteful number, since it uses less digits than its factorization.

641168423503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252133264.

The product of its (nonzero) digits is 414720, while the sum is 43.

The spelling of 641168423503 in words is "six hundred forty-one billion, one hundred sixty-eight million, four hundred twenty-three thousand, five hundred three".