641535401133 has 12 divisors (see below), whose sum is σ = 1010904268608. Its totient is φ = 388809333960.

The previous prime is 641535401093. The next prime is 641535401137. The reversal of 641535401133 is 331104535146.

641535401133 is a `hidden beast` number, since 6 + 4 + 1 + 535 + 4 + 0 + 113 + 3 = 666.

It is not a de Polignac number, because 641535401133 - 2⁶ = 641535401069 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641535401137) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3240077685 + ... + 3240077882.

It is an arithmetic number, because the mean of its divisors is an integer number (84242022384).

Almost surely, 2^641535401133 is an apocalyptic number.

It is an amenable number.

641535401133 is a deficient number, since it is larger than the sum of its proper divisors (369368867475).

641535401133 is a wasteful number, since it uses less digits than its factorization.

641535401133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6480155584 (or 6480155581 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

Adding to 641535401133 its reverse (331104535146), we get a palindrome (972639936279).

The spelling of 641535401133 in words is "six hundred forty-one billion, five hundred thirty-five million, four hundred one thousand, one hundred thirty-three".