8640451260 has 288 divisors, whose sum is σ = 30728880000. Its totient is φ = 1964390400.

The previous prime is 8640451231. The next prime is 8640451271. The reversal of 8640451260 is 621540468.

8640451260 is a `hidden beast` number, since 8 + 640 + 4 + 5 + 1 + 2 + 6 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 21547060 + ... + 21547460.

It is an arithmetic number, because the mean of its divisors is an integer number (106697500).

Almost surely, 2^8640451260 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 8640451260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15364440000).

8640451260 is an abundant number, since it is smaller than the sum of its proper divisors (22088428740).

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

8640451260 is a wasteful number, since it uses less digits than its factorization.

8640451260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 786 (or 767 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 8640451260 is about 92954.0276695959. The cubic root of 8640451260 is about 2052.0068596376.

The spelling of 8640451260 in words is "eight billion, six hundred forty million, four hundred fifty-one thousand, two hundred sixty".