4640644082028 has 24 divisors (see below), whose sum is σ = 11079987421888. Its totient is φ = 1510907375376.

The previous prime is 4640644081991. The next prime is 4640644082029. The reversal of 4640644082028 is 8202804460464.

It is a super-2 number, since 2×4640644082028² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4640644082029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4496747626 + ... + 4496748657.

Almost surely, 2^{4640644082028} is an apocalyptic number.

It is an amenable number.

4640644082028 is an abundant number, since it is smaller than the sum of its proper divisors (6439343339860).

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

4640644082028 is a wasteful number, since it uses less digits than its factorization.

4640644082028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8993496333 (or 8993496331 counting only the distinct ones).

The product of its (nonzero) digits is 2359296, while the sum is 48.

The spelling of 4640644082028 in words is "four trillion, six hundred forty billion, six hundred forty-four million, eighty-two thousand, twenty-eight".