104678323531921 has 2 divisors, whose sum is σ = 104678323531922. Its totient is φ = 104678323531920.

The previous prime is 104678323531889. The next prime is 104678323531937. The reversal of 104678323531921 is 129135323876401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 104494681285696 + 183642246225 = 10222264^2 + 428535^2 .

It is a cyclic number.

It is not a de Polignac number, because 104678323531921 - 2⁵ = 104678323531889 is a prime.

It is not a weakly prime, because it can be changed into another prime (104678323561921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52339161765960 + 52339161765961.

It is an arithmetic number, because the mean of its divisors is an integer number (52339161765961).

It is a 1-persistent number, because it is pandigital, but 2⋅104678323531921 = 209356647063842 is not.

Almost surely, 2^{104678323531921} is an apocalyptic number.

It is an amenable number.

104678323531921 is a deficient number, since it is larger than the sum of its proper divisors (1).

104678323531921 is an equidigital number, since it uses as much as digits as its factorization.

104678323531921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6531840, while the sum is 55.

The spelling of 104678323531921 in words is "one hundred four trillion, six hundred seventy-eight billion, three hundred twenty-three million, five hundred thirty-one thousand, nine hundred twenty-one".