140143954679 has 2 divisors, whose sum is σ = 140143954680. Its totient is φ = 140143954678.

The previous prime is 140143954649. The next prime is 140143954703. The reversal of 140143954679 is 976459341041.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140143954679 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 140143954679.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140143954649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70071977339 + 70071977340.

It is an arithmetic number, because the mean of its divisors is an integer number (70071977340).

Almost surely, 2^140143954679 is an apocalyptic number.

140143954679 is a deficient number, since it is larger than the sum of its proper divisors (1).

140143954679 is an equidigital number, since it uses as much as digits as its factorization.

140143954679 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3265920, while the sum is 53.

It can be divided in two parts, 14014 and 3954679, that added together give a palindrome (3968693).

The spelling of 140143954679 in words is "one hundred forty billion, one hundred forty-three million, nine hundred fifty-four thousand, six hundred seventy-nine".