154420446164641 has 2 divisors, whose sum is σ = 154420446164642. Its totient is φ = 154420446164640.

The previous prime is 154420446164627. The next prime is 154420446164717. The reversal of 154420446164641 is 146461644024451.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 97511754038416 + 56908692126225 = 9874804^2 + 7543785^2 .

It is a cyclic number.

It is not a de Polignac number, because 154420446164641 - 2¹⁵ = 154420446131873 is a prime.

It is not a weakly prime, because it can be changed into another prime (154420446164141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77210223082320 + 77210223082321.

It is an arithmetic number, because the mean of its divisors is an integer number (77210223082321).

Almost surely, 2^{154420446164641} is an apocalyptic number.

It is an amenable number.

154420446164641 is a deficient number, since it is larger than the sum of its proper divisors (1).

154420446164641 is an equidigital number, since it uses as much as digits as its factorization.

154420446164641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8847360, while the sum is 52.

The spelling of 154420446164641 in words is "one hundred fifty-four trillion, four hundred twenty billion, four hundred forty-six million, one hundred sixty-four thousand, six hundred forty-one".