4642547856 has 80 divisors (see below), whose sum is σ = 12654071040. Its totient is φ = 1462631040.

The previous prime is 4642547827. The next prime is 4642547873. The reversal of 4642547856 is 6587452464.

It is a junction number, because it is equal to n+sod(n) for n = 4642547799 and 4642547808.

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, 398271 + ... + 409761.

It is an arithmetic number, because the mean of its divisors is an integer number (158175888).

Almost surely, 2^4642547856 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 4642547856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6327035520).

4642547856 is an abundant number, since it is smaller than the sum of its proper divisors (8011523184).

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

4642547856 is a wasteful number, since it uses less digits than its factorization.

4642547856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11964 (or 11958 counting only the distinct ones).

The product of its digits is 6451200, while the sum is 51.

The square root of 4642547856 is about 68136.2448040689. The cubic root of 4642547856 is about 1668.2154142139.

The spelling of 4642547856 in words is "four billion, six hundred forty-two million, five hundred forty-seven thousand, eight hundred fifty-six".