642353202353246 has 8 divisors (see below), whose sum is σ = 996754969168920. Its totient is φ = 310101545963608.

The previous prime is 642353202353209. The next prime is 642353202353249.

642353202353246 is nontrivially palindromic in base 10.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 642353202353194 and 642353202353203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642353202353249) 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, 5537527606436 + ... + 5537527606551.

It is an arithmetic number, because the mean of its divisors is an integer number (124594371146115).

Almost surely, 2^{642353202353246} is an apocalyptic number.

642353202353246 is a deficient number, since it is larger than the sum of its proper divisors (354401766815674).

642353202353246 is a wasteful number, since it uses less digits than its factorization.

642353202353246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11075055213018.

The product of its (nonzero) digits is 18662400, while the sum is 50.

It can be divided in two parts, 64235320 and 2353246, that added together give a palindrome (66588566).

The spelling of 642353202353246 in words is "six hundred forty-two trillion, three hundred fifty-three billion, two hundred two million, three hundred fifty-three thousand, two hundred forty-six".