641684486145 has 16 divisors (see below), whose sum is σ = 1027731220992. Its totient is φ = 341886378240.

The previous prime is 641684486119. The next prime is 641684486171. The reversal of 641684486145 is 541684486146.

It is an interprime number because it is at equal distance from previous prime (641684486119) and next prime (641684486171).

It is not a de Polignac number, because 641684486145 - 2¹⁷ = 641684355073 is a prime.

It is a super-2 number, since 2×641684486145² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21568872 + ... + 21598601.

It is an arithmetic number, because the mean of its divisors is an integer number (64233201312).

Almost surely, 2^641684486145 is an apocalyptic number.

It is an amenable number.

641684486145 is a deficient number, since it is larger than the sum of its proper divisors (386046734847).

641684486145 is a wasteful number, since it uses less digits than its factorization.

641684486145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43168472.

The product of its digits is 17694720, while the sum is 57.

Subtracting from 641684486145 its reverse (541684486146), we obtain a palindrome (99999999999).

The spelling of 641684486145 in words is "six hundred forty-one billion, six hundred eighty-four million, four hundred eighty-six thousand, one hundred forty-five".