104767991921 has 2 divisors, whose sum is σ = 104767991922. Its totient is φ = 104767991920.

The previous prime is 104767991869. The next prime is 104767991983. The reversal of 104767991921 is 129199767401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70926342400 + 33841649521 = 266320^2 + 183961^2 .

It is a cyclic number.

It is not a de Polignac number, because 104767991921 - 2¹⁴ = 104767975537 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (104767991621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52383995960 + 52383995961.

It is an arithmetic number, because the mean of its divisors is an integer number (52383995961).

Almost surely, 2^104767991921 is an apocalyptic number.

It is an amenable number.

104767991921 is a deficient number, since it is larger than the sum of its proper divisors (1).

104767991921 is an equidigital number, since it uses as much as digits as its factorization.

104767991921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1714608, while the sum is 56.

The spelling of 104767991921 in words is "one hundred four billion, seven hundred sixty-seven million, nine hundred ninety-one thousand, nine hundred twenty-one".