140845775641 has 4 divisors (see below), whose sum is σ = 140995453284. Its totient is φ = 140696098000.

The previous prime is 140845775633. The next prime is 140845775647. The reversal of 140845775641 is 146577548041.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 49820472025 + 91025303616 = 223205^2 + 301704^2 .

It is a cyclic number.

It is not a de Polignac number, because 140845775641 - 2³ = 140845775633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140845775647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74837410 + ... + 74839291.

It is an arithmetic number, because the mean of its divisors is an integer number (35248863321).

Almost surely, 2^140845775641 is an apocalyptic number.

It is an amenable number.

140845775641 is a deficient number, since it is larger than the sum of its proper divisors (149677643).

140845775641 is an equidigital number, since it uses as much as digits as its factorization.

140845775641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149677642.

The product of its (nonzero) digits is 3763200, while the sum is 52.

The spelling of 140845775641 in words is "one hundred forty billion, eight hundred forty-five million, seven hundred seventy-five thousand, six hundred forty-one".