140504214581 has 2 divisors, whose sum is σ = 140504214582. Its totient is φ = 140504214580.

The previous prime is 140504214563. The next prime is 140504214611. The reversal of 140504214581 is 185412405041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 121236276100 + 19267938481 = 348190^2 + 138809^2 .

It is a cyclic number.

It is not a de Polignac number, because 140504214581 - 2⁶ = 140504214517 is a prime.

It is a super-2 number, since 2×140504214581² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140504214551) 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, 70252107290 + 70252107291.

It is an arithmetic number, because the mean of its divisors is an integer number (70252107291).

Almost surely, 2^140504214581 is an apocalyptic number.

It is an amenable number.

140504214581 is a deficient number, since it is larger than the sum of its proper divisors (1).

140504214581 is an equidigital number, since it uses as much as digits as its factorization.

140504214581 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 140504214581 in words is "one hundred forty billion, five hundred four million, two hundred fourteen thousand, five hundred eighty-one".