641135211501 has 32 divisors (see below), whose sum is σ = 864078824448. Its totient is φ = 422835943680.

The previous prime is 641135211491. The next prime is 641135211529. The reversal of 641135211501 is 105112531146.

It is not a de Polignac number, because 641135211501 - 2¹⁴ = 641135195117 is a prime.

It is a super-2 number, since 2×641135211501² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641135211571) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 137668965 + ... + 137673621.

It is an arithmetic number, because the mean of its divisors is an integer number (27002463264).

Almost surely, 2^641135211501 is an apocalyptic number.

It is an amenable number.

641135211501 is a deficient number, since it is larger than the sum of its proper divisors (222943612947).

641135211501 is a wasteful number, since it uses less digits than its factorization.

641135211501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6081.

The product of its (nonzero) digits is 3600, while the sum is 30.

Adding to 641135211501 its reverse (105112531146), we get a palindrome (746247742647).

The spelling of 641135211501 in words is "six hundred forty-one billion, one hundred thirty-five million, two hundred eleven thousand, five hundred one".