140531862685 has 4 divisors (see below), whose sum is σ = 168638235228. Its totient is φ = 112425490144.

The previous prime is 140531862659. The next prime is 140531862697. The reversal of 140531862685 is 586268135041.

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 78045361956 + 62486500729 = 279366^2 + 249973^2 .

It is a cyclic number.

It is not a de Polignac number, because 140531862685 - 2⁷ = 140531862557 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14053186264 + ... + 14053186273.

It is an arithmetic number, because the mean of its divisors is an integer number (42159558807).

Almost surely, 2^140531862685 is an apocalyptic number.

It is an amenable number.

140531862685 is a deficient number, since it is larger than the sum of its proper divisors (28106372543).

140531862685 is an equidigital number, since it uses as much as digits as its factorization.

140531862685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28106372542.

The product of its (nonzero) digits is 1382400, while the sum is 49.

The spelling of 140531862685 in words is "one hundred forty billion, five hundred thirty-one million, eight hundred sixty-two thousand, six hundred eighty-five".