140642164216441 has 4 divisors (see below), whose sum is σ = 140643606782884. Its totient is φ = 140640721650000.

The previous prime is 140642164216427. The next prime is 140642164216451. The reversal of 140642164216441 is 144612461246041.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 120915952600041 + 19726211616400 = 10996179^2 + 4441420^2 .

It is a cyclic number.

It is not a de Polignac number, because 140642164216441 - 2⁷ = 140642164216313 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 140642164216391 and 140642164216400.

It is not an unprimeable number, because it can be changed into a prime (140642164216451) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 721136970 + ... + 721331971.

It is an arithmetic number, because the mean of its divisors is an integer number (35160901695721).

Almost surely, 2^{140642164216441} is an apocalyptic number.

It is an amenable number.

140642164216441 is a deficient number, since it is larger than the sum of its proper divisors (1442566443).

140642164216441 is an equidigital number, since it uses as much as digits as its factorization.

140642164216441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1442566442.

The product of its (nonzero) digits is 884736, while the sum is 46.

The spelling of 140642164216441 in words is "one hundred forty trillion, six hundred forty-two billion, one hundred sixty-four million, two hundred sixteen thousand, four hundred forty-one".