140546451281 has 2 divisors, whose sum is σ = 140546451282. Its totient is φ = 140546451280.

The previous prime is 140546451181. The next prime is 140546451299. The reversal of 140546451281 is 182154645041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 90576319681 + 49970131600 = 300959^2 + 223540^2 .

It is a cyclic number.

It is not a de Polignac number, because 140546451281 - 2²⁶ = 140479342417 is a prime.

It is a super-2 number, since 2×140546451281² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (140546451181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70273225640 + 70273225641.

It is an arithmetic number, because the mean of its divisors is an integer number (70273225641).

Almost surely, 2^140546451281 is an apocalyptic number.

It is an amenable number.

140546451281 is a deficient number, since it is larger than the sum of its proper divisors (1).

140546451281 is an equidigital number, since it uses as much as digits as its factorization.

140546451281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 153600, while the sum is 41.

The spelling of 140546451281 in words is "one hundred forty billion, five hundred forty-six million, four hundred fifty-one thousand, two hundred eighty-one".