140181680393 has 4 divisors (see below), whose sum is σ = 141285473280. Its totient is φ = 139077887508.

The previous prime is 140181680357. The next prime is 140181680453. The reversal of 140181680393 is 393086181041.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 140181680393 - 2⁸ = 140181680137 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (140181680333) 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, 551896253 + ... + 551896506.

It is an arithmetic number, because the mean of its divisors is an integer number (35321368320).

Almost surely, 2^140181680393 is an apocalyptic number.

It is an amenable number.

140181680393 is a deficient number, since it is larger than the sum of its proper divisors (1103792887).

140181680393 is a wasteful number, since it uses less digits than its factorization.

140181680393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1103792886.

The product of its (nonzero) digits is 124416, while the sum is 44.

The spelling of 140181680393 in words is "one hundred forty billion, one hundred eighty-one million, six hundred eighty thousand, three hundred ninety-three".