642463514223 has 4 divisors (see below), whose sum is σ = 856618018968. Its totient is φ = 428309009480.

The previous prime is 642463514183. The next prime is 642463514227. The reversal of 642463514223 is 322415364246.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 642463514223 - 2⁹ = 642463513711 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642463514227) 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, 107077252368 + ... + 107077252373.

It is an arithmetic number, because the mean of its divisors is an integer number (214154504742).

Almost surely, 2^642463514223 is an apocalyptic number.

642463514223 is a deficient number, since it is larger than the sum of its proper divisors (214154504745).

642463514223 is a wasteful number, since it uses less digits than its factorization.

642463514223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214154504744.

The product of its digits is 829440, while the sum is 42.

Adding to 642463514223 its reverse (322415364246), we get a palindrome (964878878469).

The spelling of 642463514223 in words is "six hundred forty-two billion, four hundred sixty-three million, five hundred fourteen thousand, two hundred twenty-three".