140019408365 has 4 divisors (see below), whose sum is σ = 168023290044. Its totient is φ = 112015526688.

The previous prime is 140019408343. The next prime is 140019408371. The reversal of 140019408365 is 563804910041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 563804910041 = 97 ⋅5812421753.

It can be written as a sum of positive squares in 2 ways, for example, as 25852459369 + 114166948996 = 160787^2 + 337886^2 .

It is a cyclic number.

It is not a de Polignac number, because 140019408365 - 2³⁶ = 71299931629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14001940832 + ... + 14001940841.

It is an arithmetic number, because the mean of its divisors is an integer number (42005822511).

Almost surely, 2^140019408365 is an apocalyptic number.

It is an amenable number.

140019408365 is a deficient number, since it is larger than the sum of its proper divisors (28003881679).

140019408365 is an equidigital number, since it uses as much as digits as its factorization.

140019408365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28003881678.

The product of its (nonzero) digits is 103680, while the sum is 41.

The spelling of 140019408365 in words is "one hundred forty billion, nineteen million, four hundred eight thousand, three hundred sixty-five".