140806814689 has 2 divisors, whose sum is σ = 140806814690. Its totient is φ = 140806814688.

The previous prime is 140806814633. The next prime is 140806814699. The reversal of 140806814689 is 986418608041.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 122651947089 + 18154867600 = 350217^2 + 134740^2 .

It is a cyclic number.

It is not a de Polignac number, because 140806814689 - 2³⁵ = 106447076321 is a prime.

It is not a weakly prime, because it can be changed into another prime (140806814609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70403407344 + 70403407345.

It is an arithmetic number, because the mean of its divisors is an integer number (70403407345).

Almost surely, 2^140806814689 is an apocalyptic number.

It is an amenable number.

140806814689 is a deficient number, since it is larger than the sum of its proper divisors (1).

140806814689 is an equidigital number, since it uses as much as digits as its factorization.

140806814689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2654208, while the sum is 55.

The spelling of 140806814689 in words is "one hundred forty billion, eight hundred six million, eight hundred fourteen thousand, six hundred eighty-nine".