100461637866809 has 2 divisors, whose sum is σ = 100461637866810. Its totient is φ = 100461637866808.

The previous prime is 100461637866803. The next prime is 100461637866869. The reversal of 100461637866809 is 908668736164001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 100021501155625 + 440136711184 = 10001075^2 + 663428^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100461637866809 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 (100461637866803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50230818933404 + 50230818933405.

It is an arithmetic number, because the mean of its divisors is an integer number (50230818933405).

Almost surely, 2^{100461637866809} is an apocalyptic number.

It is an amenable number.

100461637866809 is a deficient number, since it is larger than the sum of its proper divisors (1).

100461637866809 is an equidigital number, since it uses as much as digits as its factorization.

100461637866809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62705664, while the sum is 65.

The spelling of 100461637866809 in words is "one hundred trillion, four hundred sixty-one billion, six hundred thirty-seven million, eight hundred sixty-six thousand, eight hundred nine".