140683838257 has 4 divisors (see below), whose sum is σ = 140706783220. Its totient is φ = 140660893296.

The previous prime is 140683838233. The next prime is 140683838293. The reversal of 140683838257 is 752838386041.

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 116270088256 + 24413750001 = 340984^2 + 156249^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140683838257 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 140683838198 and 140683838207.

It is not an unprimeable number, because it can be changed into a prime (140683830257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11463282 + ... + 11475547.

It is an arithmetic number, because the mean of its divisors is an integer number (35176695805).

Almost surely, 2^140683838257 is an apocalyptic number.

It is an amenable number.

140683838257 is a deficient number, since it is larger than the sum of its proper divisors (22944963).

140683838257 is an equidigital number, since it uses as much as digits as its factorization.

140683838257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22944962.

The product of its (nonzero) digits is 7741440, while the sum is 55.

The spelling of 140683838257 in words is "one hundred forty billion, six hundred eighty-three million, eight hundred thirty-eight thousand, two hundred fifty-seven".