140405443443454 has 16 divisors (see below), whose sum is σ = 246292605111168. Its totient is φ = 58774371673752.

The previous prime is 140405443443437. The next prime is 140405443443479. The reversal of 140405443443454 is 454344344504041.

It is a junction number, because it is equal to n+sod(n) for n = 140405443443398 and 140405443443407.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116615816212 + ... + 116615817415.

It is an arithmetic number, because the mean of its divisors is an integer number (15393287819448).

Almost surely, 2^{140405443443454} is an apocalyptic number.

140405443443454 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

140405443443454 is a deficient number, since it is larger than the sum of its proper divisors (105887161667714).

140405443443454 is a wasteful number, since it uses less digits than its factorization.

140405443443454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233231633679.

The product of its (nonzero) digits is 14745600, while the sum is 49.

Adding to 140405443443454 its reverse (454344344504041), we get a palindrome (594749787947495).

The spelling of 140405443443454 in words is "one hundred forty trillion, four hundred five billion, four hundred forty-three million, four hundred forty-three thousand, four hundred fifty-four".