104873061721 has 4 divisors (see below), whose sum is σ = 108256063744. Its totient is φ = 101490059700.

The previous prime is 104873061703. The next prime is 104873061743. The reversal of 104873061721 is 127160378401.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 104873061721 - 2⁷ = 104873061593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (104873061791) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1691500965 + ... + 1691501026.

It is an arithmetic number, because the mean of its divisors is an integer number (27064015936).

Almost surely, 2^104873061721 is an apocalyptic number.

It is an amenable number.

104873061721 is a deficient number, since it is larger than the sum of its proper divisors (3383002023).

104873061721 is an equidigital number, since it uses as much as digits as its factorization.

104873061721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3383002022.

The product of its (nonzero) digits is 56448, while the sum is 40.

The spelling of 104873061721 in words is "one hundred four billion, eight hundred seventy-three million, sixty-one thousand, seven hundred twenty-one".