64004640846 has 32 divisors (see below), whose sum is σ = 133269970848. Its totient is φ = 20473896960.

The previous prime is 64004640829. The next prime is 64004640853. The reversal of 64004640846 is 64804640046.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 64004640798 and 64004640807.

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, 1958515 + ... + 1990926.

It is an arithmetic number, because the mean of its divisors is an integer number (4164686589).

Almost surely, 2^64004640846 is an apocalyptic number.

64004640846 is an abundant number, since it is smaller than the sum of its proper divisors (69265330002).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64004640846 is a wasteful number, since it uses less digits than its factorization.

64004640846 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3949556.

The product of its (nonzero) digits is 442368, while the sum is 42.

The spelling of 64004640846 in words is "sixty-four billion, four million, six hundred forty thousand, eight hundred forty-six".