140634568289 has 4 divisors (see below), whose sum is σ = 140644857024. Its totient is φ = 140624279556.

The previous prime is 140634568253. The next prime is 140634568297. The reversal of 140634568289 is 982865436041.

140634568289 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 982865436041 = 227 ⋅4329803683.

It is a cyclic number.

It is not a de Polignac number, because 140634568289 - 2²⁰ = 140633519713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140634568219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5123837 + ... + 5151210.

It is an arithmetic number, because the mean of its divisors is an integer number (35161214256).

Almost surely, 2^140634568289 is an apocalyptic number.

It is an amenable number.

140634568289 is a deficient number, since it is larger than the sum of its proper divisors (10288735).

140634568289 is a wasteful number, since it uses less digits than its factorization.

140634568289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10288734.

The product of its (nonzero) digits is 9953280, while the sum is 56.

The spelling of 140634568289 in words is "one hundred forty billion, six hundred thirty-four million, five hundred sixty-eight thousand, two hundred eighty-nine".