84155127387601 has 2 divisors, whose sum is σ = 84155127387602. Its totient is φ = 84155127387600.

The previous prime is 84155127387577. The next prime is 84155127387671. The reversal of 84155127387601 is 10678372155148.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69340511139025 + 14814616248576 = 8327095^2 + 3848976^2 .

It is a cyclic number.

It is not a de Polignac number, because 84155127387601 - 2¹³ = 84155127379409 is a prime.

It is not a weakly prime, because it can be changed into another prime (84155127387671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42077563693800 + 42077563693801.

It is an arithmetic number, because the mean of its divisors is an integer number (42077563693801).

Almost surely, 2^{84155127387601} is an apocalyptic number.

It is an amenable number.

84155127387601 is a deficient number, since it is larger than the sum of its proper divisors (1).

84155127387601 is an equidigital number, since it uses as much as digits as its factorization.

84155127387601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11289600, while the sum is 58.

The spelling of 84155127387601 in words is "eighty-four trillion, one hundred fifty-five billion, one hundred twenty-seven million, three hundred eighty-seven thousand, six hundred one".