104020119961 has 2 divisors, whose sum is σ = 104020119962. Its totient is φ = 104020119960.

The previous prime is 104020119949. The next prime is 104020119991. The reversal of 104020119961 is 169911020401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78470015625 + 25550104336 = 280125^2 + 159844^2 .

It is an emirp because it is prime and its reverse (169911020401) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 104020119961 - 2⁹ = 104020119449 is a prime.

It is not a weakly prime, because it can be changed into another prime (104020119991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52010059980 + 52010059981.

It is an arithmetic number, because the mean of its divisors is an integer number (52010059981).

Almost surely, 2^104020119961 is an apocalyptic number.

It is an amenable number.

104020119961 is a deficient number, since it is larger than the sum of its proper divisors (1).

104020119961 is an equidigital number, since it uses as much as digits as its factorization.

104020119961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 34.

The spelling of 104020119961 in words is "one hundred four billion, twenty million, one hundred nineteen thousand, nine hundred sixty-one".