104435140581 has 24 divisors (see below), whose sum is σ = 151764166944. Its totient is φ = 69203127840.

The previous prime is 104435140543. The next prime is 104435140597. The reversal of 104435140581 is 185041534401.

104435140581 is a `hidden beast` number, since 1 + 0 + 4 + 4 + 35 + 1 + 40 + 581 = 666.

It is not a de Polignac number, because 104435140581 - 2²³ = 104426751973 is a prime.

It is a super-2 number, since 2×104435140581² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104435140781) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 937246 + ... + 1042736.

It is an arithmetic number, because the mean of its divisors is an integer number (6323506956).

Almost surely, 2^104435140581 is an apocalyptic number.

It is an amenable number.

104435140581 is a deficient number, since it is larger than the sum of its proper divisors (47329026363).

104435140581 is a wasteful number, since it uses less digits than its factorization.

104435140581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106161 (or 106158 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

Adding to 104435140581 its reverse (185041534401), we get a palindrome (289476674982).

The spelling of 104435140581 in words is "one hundred four billion, four hundred thirty-five million, one hundred forty thousand, five hundred eighty-one".