641001560101 has 4 divisors (see below), whose sum is σ = 732573211552. Its totient is φ = 549429908652.

The previous prime is 641001560099. The next prime is 641001560119. The reversal of 641001560101 is 101065100146.

641001560101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 641001560101 - 2¹ = 641001560099 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641001560131) 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, 45785825715 + ... + 45785825728.

It is an arithmetic number, because the mean of its divisors is an integer number (183143302888).

Almost surely, 2^641001560101 is an apocalyptic number.

It is an amenable number.

641001560101 is a deficient number, since it is larger than the sum of its proper divisors (91571651451).

641001560101 is an equidigital number, since it uses as much as digits as its factorization.

641001560101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91571651450.

The product of its (nonzero) digits is 720, while the sum is 25.

Adding to 641001560101 its reverse (101065100146), we get a palindrome (742066660247).

The spelling of 641001560101 in words is "six hundred forty-one billion, one million, five hundred sixty thousand, one hundred one".