4691561472 has 440 divisors, whose sum is σ = 15951042800. Its totient is φ = 1361608704.

The previous prime is 4691561447. The next prime is 4691561509. The reversal of 4691561472 is 2741651964.

4691561472 is a `hidden beast` number, since 46 + 9 + 1 + 561 + 47 + 2 = 666.

It is a zygodrome in base 3.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 20487054 + ... + 20487282.

It is an arithmetic number, because the mean of its divisors is an integer number (36252370).

Almost surely, 2^4691561472 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 4691561472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7975521400).

4691561472 is an abundant number, since it is smaller than the sum of its proper divisors (11259481328).

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

4691561472 is a wasteful number, since it uses less digits than its factorization.

4691561472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293 (or 266 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 4691561472 is about 68494.9740637954. The cubic root of 4691561472 is about 1674.0655926817.

The spelling of 4691561472 in words is "four billion, six hundred ninety-one million, five hundred sixty-one thousand, four hundred seventy-two".