641536203711 has 16 divisors (see below), whose sum is σ = 952945025760. Its totient is φ = 381178008960.

The previous prime is 641536203689. The next prime is 641536203731. The reversal of 641536203711 is 117302635146.

It is not a de Polignac number, because 641536203711 - 2⁶ = 641536203647 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 641536203711.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641536203731) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 283613460 + ... + 283615721.

It is an arithmetic number, because the mean of its divisors is an integer number (59559064110).

Almost surely, 2^641536203711 is an apocalyptic number.

641536203711 is a deficient number, since it is larger than the sum of its proper divisors (311408822049).

641536203711 is a wasteful number, since it uses less digits than its factorization.

641536203711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 567229226.

The product of its (nonzero) digits is 90720, while the sum is 39.

Adding to 641536203711 its reverse (117302635146), we get a palindrome (758838838857).

The spelling of 641536203711 in words is "six hundred forty-one billion, five hundred thirty-six million, two hundred three thousand, seven hundred eleven".