140175531778081 has 2 divisors, whose sum is σ = 140175531778082. Its totient is φ = 140175531778080.

The previous prime is 140175531778057. The next prime is 140175531778141. The reversal of 140175531778081 is 180877135571041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88780038803856 + 51395492974225 = 9422316^2 + 7169065^2 .

It is a cyclic number.

It is not a de Polignac number, because 140175531778081 - 2²⁷ = 140175397560353 is a prime.

It is a super-2 number, since 2×140175531778081² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (140175531778021) 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, 70087765889040 + 70087765889041.

It is an arithmetic number, because the mean of its divisors is an integer number (70087765889041).

Almost surely, 2^{140175531778081} is an apocalyptic number.

It is an amenable number.

140175531778081 is a deficient number, since it is larger than the sum of its proper divisors (1).

140175531778081 is an equidigital number, since it uses as much as digits as its factorization.

140175531778081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6585600, while the sum is 58.

The spelling of 140175531778081 in words is "one hundred forty trillion, one hundred seventy-five billion, five hundred thirty-one million, seven hundred seventy-eight thousand, eighty-one".