140405213144452 has 6 divisors (see below), whose sum is σ = 245709123002798. Its totient is φ = 70202606572224.

The previous prime is 140405213144267. The next prime is 140405213144477. The reversal of 140405213144452 is 254441312504041.

It can be written as a sum of positive squares in only one way, i.e., 113424502208836 + 26980710935616 = 10650094^2 + 5194296^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17550651643053 + ... + 17550651643060.

Almost surely, 2^{140405213144452} is an apocalyptic number.

It is an amenable number.

140405213144452 is a deficient number, since it is larger than the sum of its proper divisors (105303909858346).

140405213144452 is a wasteful number, since it uses less digits than its factorization.

140405213144452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35101303286117 (or 35101303286115 counting only the distinct ones).

The product of its (nonzero) digits is 307200, while the sum is 40.

Adding to 140405213144452 its reverse (254441312504041), we get a palindrome (394846525648493).

The spelling of 140405213144452 in words is "one hundred forty trillion, four hundred five billion, two hundred thirteen million, one hundred forty-four thousand, four hundred fifty-two".