642623351053 has 8 divisors (see below), whose sum is σ = 642854682848. Its totient is φ = 642392072784.

The previous prime is 642623351021. The next prime is 642623351059. The reversal of 642623351053 is 350153326246.

642623351053 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 642623351053 - 2⁵ = 642623351021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 642623350997 and 642623351015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642623351059) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55454926 + ... + 55466512.

It is an arithmetic number, because the mean of its divisors is an integer number (80356835356).

Almost surely, 2^642623351053 is an apocalyptic number.

It is an amenable number.

642623351053 is a deficient number, since it is larger than the sum of its proper divisors (231331795).

642623351053 is a wasteful number, since it uses less digits than its factorization.

642623351053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26763.

The product of its (nonzero) digits is 388800, while the sum is 40.

Adding to 642623351053 its reverse (350153326246), we get a palindrome (992776677299).

The spelling of 642623351053 in words is "six hundred forty-two billion, six hundred twenty-three million, three hundred fifty-one thousand, fifty-three".