641100355013 has 8 divisors (see below), whose sum is σ = 678843241560. Its totient is φ = 603360924160.

The previous prime is 641100355009. The next prime is 641100355019. The reversal of 641100355013 is 310553001146.

It can be written as a sum of positive squares in 4 ways, for example, as 123273316609 + 517827038404 = 351103^2 + 719602^2 .

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 641100355013 - 2² = 641100355009 is a prime.

It is a super-2 number, since 2×641100355013² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641100355019) 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, 477008 + ... + 1228713.

It is an arithmetic number, because the mean of its divisors is an integer number (84855405195).

Almost surely, 2^641100355013 is an apocalyptic number.

It is an amenable number.

641100355013 is a deficient number, since it is larger than the sum of its proper divisors (37742886547).

641100355013 is a wasteful number, since it uses less digits than its factorization.

641100355013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1727847.

The product of its (nonzero) digits is 5400, while the sum is 29.

Adding to 641100355013 its reverse (310553001146), we get a palindrome (951653356159).

The spelling of 641100355013 in words is "six hundred forty-one billion, one hundred million, three hundred fifty-five thousand, thirteen".