100016510060581 has 2 divisors, whose sum is σ = 100016510060582. Its totient is φ = 100016510060580.

The previous prime is 100016510060573. The next prime is 100016510060651. The reversal of 100016510060581 is 185060015610001.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71778020340481 + 28238489720100 = 8472191^2 + 5313990^2 .

It is a cyclic number.

It is not a de Polignac number, because 100016510060581 - 2³ = 100016510060573 is a prime.

It is a super-2 number, since 2×100016510060581² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100016510060981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50008255030290 + 50008255030291.

It is an arithmetic number, because the mean of its divisors is an integer number (50008255030291).

Almost surely, 2^{100016510060581} is an apocalyptic number.

It is an amenable number.

100016510060581 is a deficient number, since it is larger than the sum of its proper divisors (1).

100016510060581 is an equidigital number, since it uses as much as digits as its factorization.

100016510060581 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7200, while the sum is 34.

Adding to 100016510060581 its reverse (185060015610001), we get a palindrome (285076525670582).

The spelling of 100016510060581 in words is "one hundred trillion, sixteen billion, five hundred ten million, sixty thousand, five hundred eighty-one".