140673611506 has 8 divisors (see below), whose sum is σ = 211214689884. Its totient is φ = 70268714880.

The previous prime is 140673611503. The next prime is 140673611513. The reversal of 140673611506 is 605116376041.

It can be written as a sum of positive squares in 2 ways, for example, as 137437025625 + 3236585881 = 370725^2 + 56891^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (140673611503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34042855 + ... + 34046986.

Almost surely, 2^140673611506 is an apocalyptic number.

140673611506 is a deficient number, since it is larger than the sum of its proper divisors (70541078378).

140673611506 is a wasteful number, since it uses less digits than its factorization.

140673611506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68090876.

The product of its (nonzero) digits is 90720, while the sum is 40.

Adding to 140673611506 its reverse (605116376041), we get a palindrome (745789987547).

The spelling of 140673611506 in words is "one hundred forty billion, six hundred seventy-three million, six hundred eleven thousand, five hundred six".