64642024646 has 32 divisors (see below), whose sum is σ = 105231133152. Its totient is φ = 29668953600.

The previous prime is 64642024619. The next prime is 64642024673.

64642024646 is nontrivially palindromic in base 10.

64642024646 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (64642024619) and next prime (64642024673).

It is a junction number, because it is equal to n+sod(n) for n = 64642024597 and 64642024606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89600 + ... + 370556.

It is an arithmetic number, because the mean of its divisors is an integer number (3288472911).

Almost surely, 2^64642024646 is an apocalyptic number.

64642024646 is a deficient number, since it is larger than the sum of its proper divisors (40589108506).

64642024646 is a wasteful number, since it uses less digits than its factorization.

64642024646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281144.

The product of its (nonzero) digits is 1327104, while the sum is 44.

The spelling of 64642024646 in words is "sixty-four billion, six hundred forty-two million, twenty-four thousand, six hundred forty-six".