140613641479 has 4 divisors (see below), whose sum is σ = 140772169584. Its totient is φ = 140455113376.

The previous prime is 140613641473. The next prime is 140613641503. The reversal of 140613641479 is 974146316041.

It is a happy number.

140613641479 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.

It is a cyclic number.

It is not a de Polignac number, because 140613641479 - 2³ = 140613641471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140613641471) 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, 79262722 + ... + 79264495.

It is an arithmetic number, because the mean of its divisors is an integer number (35193042396).

Almost surely, 2^140613641479 is an apocalyptic number.

140613641479 is a deficient number, since it is larger than the sum of its proper divisors (158528105).

140613641479 is an equidigital number, since it uses as much as digits as its factorization.

140613641479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158528104.

The product of its (nonzero) digits is 435456, while the sum is 46.

The spelling of 140613641479 in words is "one hundred forty billion, six hundred thirteen million, six hundred forty-one thousand, four hundred seventy-nine".