4521656464 has 80 divisors (see below), whose sum is σ = 10233563760. Its totient is φ = 1916190720.

The previous prime is 4521656459. The next prime is 4521656473. The reversal of 4521656464 is 4646561254.

It can be written as a sum of positive squares in 8 ways, for example, as 1331666064 + 3189990400 = 36492^2 + 56480^2 .

It is a super-3 number, since 3×4521656464³ (a number of 30 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 4521656464.

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, 129382 + ... + 160570.

It is an arithmetic number, because the mean of its divisors is an integer number (127919547).

Almost surely, 2^4521656464 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 4521656464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5116781880).

4521656464 is an abundant number, since it is smaller than the sum of its proper divisors (5711907296).

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

4521656464 is a wasteful number, since it uses less digits than its factorization.

4521656464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31268 (or 31262 counting only the distinct ones).

The product of its digits is 691200, while the sum is 43.

The square root of 4521656464 is about 67243.2633354450. The cubic root of 4521656464 is about 1653.6078341629.

The spelling of 4521656464 in words is "four billion, five hundred twenty-one million, six hundred fifty-six thousand, four hundred sixty-four".