104373107561 has 4 divisors (see below), whose sum is σ = 104373777552. Its totient is φ = 104372437572.

The previous prime is 104373107513. The next prime is 104373107567. The reversal of 104373107561 is 165701373401.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-104373107561 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (104373107567) 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, 34610 + ... + 458196.

It is an arithmetic number, because the mean of its divisors is an integer number (26093444388).

Almost surely, 2^104373107561 is an apocalyptic number.

It is an amenable number.

104373107561 is a deficient number, since it is larger than the sum of its proper divisors (669991).

104373107561 is an equidigital number, since it uses as much as digits as its factorization.

104373107561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 669990.

The product of its (nonzero) digits is 52920, while the sum is 38.

The spelling of 104373107561 in words is "one hundred four billion, three hundred seventy-three million, one hundred seven thousand, five hundred sixty-one".