140235856513 has 2 divisors, whose sum is σ = 140235856514. Its totient is φ = 140235856512.

The previous prime is 140235856511. The next prime is 140235856529. The reversal of 140235856513 is 315658532041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 137428128369 + 2807728144 = 370713^2 + 52988^2 .

It is an emirp because it is prime and its reverse (315658532041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 140235856513 - 2¹ = 140235856511 is a prime.

Together with 140235856511, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 140235856513.

It is not a weakly prime, because it can be changed into another prime (140235856511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70117928256 + 70117928257.

It is an arithmetic number, because the mean of its divisors is an integer number (70117928257).

Almost surely, 2^140235856513 is an apocalyptic number.

It is an amenable number.

140235856513 is a deficient number, since it is larger than the sum of its proper divisors (1).

140235856513 is an equidigital number, since it uses as much as digits as its factorization.

140235856513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432000, while the sum is 43.

The spelling of 140235856513 in words is "one hundred forty billion, two hundred thirty-five million, eight hundred fifty-six thousand, five hundred thirteen".