140431800645 has 24 divisors (see below), whose sum is σ = 245690037216. Its totient is φ = 74196986208.

The previous prime is 140431800631. The next prime is 140431800653. The reversal of 140431800645 is 546008134041.

140431800645 is a `hidden beast` number, since 1 + 4 + 0 + 4 + 3 + 1 + 8 + 0 + 0 + 645 = 666.

It is not a de Polignac number, because 140431800645 - 2¹⁴ = 140431784261 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14577927 + ... + 14587556.

It is an arithmetic number, because the mean of its divisors is an integer number (10237084884).

Almost surely, 2^140431800645 is an apocalyptic number.

140431800645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

140431800645 is a deficient number, since it is larger than the sum of its proper divisors (105258236571).

140431800645 is a wasteful number, since it uses less digits than its factorization.

140431800645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29165601 (or 29165598 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

Adding to 140431800645 its reverse (546008134041), we get a palindrome (686439934686).

The spelling of 140431800645 in words is "one hundred forty billion, four hundred thirty-one million, eight hundred thousand, six hundred forty-five".