4644040864040 has 16 divisors (see below), whose sum is σ = 10449091944180. Its totient is φ = 1857616345600.

The previous prime is 4644040864019. The next prime is 4644040864063. The reversal of 4644040864040 is 404680404464.

It can be written as a sum of positive squares in 2 ways, for example, as 4609377126916 + 34663737124 = 2146946^2 + 186182^2 .

It is a junction number, because it is equal to n+sod(n) for n = 4644040863982 and 4644040864000.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58050510761 + ... + 58050510840.

Almost surely, 2^{4644040864040} is an apocalyptic number.

4644040864040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4644040864040 is an abundant number, since it is smaller than the sum of its proper divisors (5805051080140).

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

4644040864040 is a wasteful number, since it uses less digits than its factorization.

4644040864040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116101021612 (or 116101021608 counting only the distinct ones).

The product of its (nonzero) digits is 1179648, while the sum is 44.

The spelling of 4644040864040 in words is "four trillion, six hundred forty-four billion, forty million, eight hundred sixty-four thousand, forty".