154142011302509 has 2 divisors, whose sum is σ = 154142011302510. Its totient is φ = 154142011302508.

The previous prime is 154142011302473. The next prime is 154142011302611. The reversal of 154142011302509 is 905203110241451.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 153240185676484 + 901825626025 = 12379022^2 + 949645^2 .

It is a cyclic number.

It is not a de Polignac number, because 154142011302509 - 2¹² = 154142011298413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (154142016302509) 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, 77071005651254 + 77071005651255.

It is an arithmetic number, because the mean of its divisors is an integer number (77071005651255).

Almost surely, 2^{154142011302509} is an apocalyptic number.

It is an amenable number.

154142011302509 is a deficient number, since it is larger than the sum of its proper divisors (1).

154142011302509 is an equidigital number, since it uses as much as digits as its factorization.

154142011302509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43200, while the sum is 38.

The spelling of 154142011302509 in words is "one hundred fifty-four trillion, one hundred forty-two billion, eleven million, three hundred two thousand, five hundred nine".