646241142646 has 8 divisors (see below), whose sum is σ = 1057485506184. Its totient is φ = 293745973920.

The previous prime is 646241142643. The next prime is 646241142667.

646241142646 is nontrivially palindromic in base 10.

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

It is a super-2 number, since 2×646241142646² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 646241142596 and 646241142605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (646241142643) 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, 14687298675 + ... + 14687298718.

It is an arithmetic number, because the mean of its divisors is an integer number (132185688273).

Almost surely, 2^646241142646 is an apocalyptic number.

646241142646 is a deficient number, since it is larger than the sum of its proper divisors (411244363538).

646241142646 is a wasteful number, since it uses less digits than its factorization.

646241142646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29374597406.

The product of its digits is 1327104, while the sum is 46.

It can be divided in two parts, 646241 and 142646, that added together give a palindrome (788887).

The spelling of 646241142646 in words is "six hundred forty-six billion, two hundred forty-one million, one hundred forty-two thousand, six hundred forty-six".