140555555549 has 4 divisors (see below), whose sum is σ = 145089605760. Its totient is φ = 136021505340.

The previous prime is 140555555531. The next prime is 140555555629. The reversal of 140555555549 is 945555555041.

140555555549 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: 945555555041 = 20663 ⋅45760807.

It is a cyclic number.

It is not a de Polignac number, because 140555555549 - 2¹⁶ = 140555490013 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 140555555549.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140555555519) 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, 2267025059 + ... + 2267025120.

It is an arithmetic number, because the mean of its divisors is an integer number (36272401440).

Almost surely, 2^140555555549 is an apocalyptic number.

It is an amenable number.

140555555549 is a deficient number, since it is larger than the sum of its proper divisors (4534050211).

140555555549 is an equidigital number, since it uses as much as digits as its factorization.

140555555549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4534050210.

The product of its (nonzero) digits is 11250000, while the sum is 53.

The spelling of 140555555549 in words is "one hundred forty billion, five hundred fifty-five million, five hundred fifty-five thousand, five hundred forty-nine".