641513232562111 has 16 divisors (see below), whose sum is σ = 789558759779328. Its totient is φ = 507568330130400.

The previous prime is 641513232562091. The next prime is 641513232562127. The reversal of 641513232562111 is 111265232315146.

It is not a de Polignac number, because 641513232562111 - 2⁷ = 641513232561983 is a prime.

It is a super-2 number, since 2×641513232562111² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641513232572111) 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, 196266 + ... + 35819896.

It is an arithmetic number, because the mean of its divisors is an integer number (49347422486208).

Almost surely, 2^{641513232562111} is an apocalyptic number.

641513232562111 is a deficient number, since it is larger than the sum of its proper divisors (148045527217217).

641513232562111 is a wasteful number, since it uses less digits than its factorization.

641513232562111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35821542.

The product of its digits is 259200, while the sum is 43.

Adding to 641513232562111 its reverse (111265232315146), we get a palindrome (752778464877257).

The spelling of 641513232562111 in words is "six hundred forty-one trillion, five hundred thirteen billion, two hundred thirty-two million, five hundred sixty-two thousand, one hundred eleven".