4581556672 has 112 divisors (see below), whose sum is σ = 11641701888. Its totient is φ = 1736709120.

The previous prime is 4581556669. The next prime is 4581556673. The reversal of 4581556672 is 2766551854.

It is a tau number, because it is divible by the number of its divisors (112).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4581556673) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 169773 + ... + 194899.

Almost surely, 2^4581556672 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4581556672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5820850944).

4581556672 is an abundant number, since it is smaller than the sum of its proper divisors (7060145216).

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

4581556672 is a wasteful number, since it uses less digits than its factorization.

4581556672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25194 (or 25184 counting only the distinct ones).

The product of its digits is 2016000, while the sum is 49.

The square root of 4581556672 is about 67687.1972532472. The cubic root of 4581556672 is about 1660.8778286422.

The spelling of 4581556672 in words is "four billion, five hundred eighty-one million, five hundred fifty-six thousand, six hundred seventy-two".