1545140040281 has 2 divisors, whose sum is σ = 1545140040282. Its totient is φ = 1545140040280.

The previous prime is 1545140040221. The next prime is 1545140040289. The reversal of 1545140040281 is 1820400415451.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 859299336256 + 685840704025 = 926984^2 + 828155^2 .

It is a cyclic number.

It is not a de Polignac number, because 1545140040281 - 2¹⁸ = 1545139778137 is a prime.

It is a super-2 number, since 2×1545140040281² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1545140040289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 772570020140 + 772570020141.

It is an arithmetic number, because the mean of its divisors is an integer number (772570020141).

Almost surely, 2^{1545140040281} is an apocalyptic number.

It is an amenable number.

1545140040281 is a deficient number, since it is larger than the sum of its proper divisors (1).

1545140040281 is an equidigital number, since it uses as much as digits as its factorization.

1545140040281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25600, while the sum is 35.

The spelling of 1545140040281 in words is "one trillion, five hundred forty-five billion, one hundred forty million, forty thousand, two hundred eighty-one".