641110853639 has 4 divisors (see below), whose sum is σ = 641202096024. Its totient is φ = 641019611256.

The previous prime is 641110853629. The next prime is 641110853657. The reversal of 641110853639 is 936358011146.

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 641110853639 - 2¹⁶ = 641110788103 is a prime.

It is a super-2 number, since 2×641110853639² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 641110853593 and 641110853602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641110853609) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 45610652 + ... + 45624705.

It is an arithmetic number, because the mean of its divisors is an integer number (160300524006).

Almost surely, 2^641110853639 is an apocalyptic number.

641110853639 is a deficient number, since it is larger than the sum of its proper divisors (91242385).

641110853639 is an equidigital number, since it uses as much as digits as its factorization.

641110853639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91242384.

The product of its (nonzero) digits is 466560, while the sum is 47.

The spelling of 641110853639 in words is "six hundred forty-one billion, one hundred ten million, eight hundred fifty-three thousand, six hundred thirty-nine".