104145464561 has 2 divisors, whose sum is σ = 104145464562. Its totient is φ = 104145464560.

The previous prime is 104145464491. The next prime is 104145464581. The reversal of 104145464561 is 165464541401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52095323536 + 52050141025 = 228244^2 + 228145^2 .

It is a cyclic number.

It is not a de Polignac number, because 104145464561 - 2²² = 104141270257 is a prime.

It is not a weakly prime, because it can be changed into another prime (104145464581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52072732280 + 52072732281.

It is an arithmetic number, because the mean of its divisors is an integer number (52072732281).

Almost surely, 2^104145464561 is an apocalyptic number.

It is an amenable number.

104145464561 is a deficient number, since it is larger than the sum of its proper divisors (1).

104145464561 is an equidigital number, since it uses as much as digits as its factorization.

104145464561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 230400, while the sum is 41.

The spelling of 104145464561 in words is "one hundred four billion, one hundred forty-five million, four hundred sixty-four thousand, five hundred sixty-one".