104585610721 has 2 divisors, whose sum is σ = 104585610722. Its totient is φ = 104585610720.

The previous prime is 104585610691. The next prime is 104585610763. The reversal of 104585610721 is 127016585401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 104422691025 + 162919696 = 323145^2 + 12764^2 .

It is an emirp because it is prime and its reverse (127016585401) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 104585610721 - 2²⁵ = 104552056289 is a prime.

It is not a weakly prime, because it can be changed into another prime (104585610791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52292805360 + 52292805361.

It is an arithmetic number, because the mean of its divisors is an integer number (52292805361).

Almost surely, 2^104585610721 is an apocalyptic number.

It is an amenable number.

104585610721 is a deficient number, since it is larger than the sum of its proper divisors (1).

104585610721 is an equidigital number, since it uses as much as digits as its factorization.

104585610721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 67200, while the sum is 40.

The spelling of 104585610721 in words is "one hundred four billion, five hundred eighty-five million, six hundred ten thousand, seven hundred twenty-one".