8651764440 has 256 divisors, whose sum is σ = 33312384000. Its totient is φ = 1973975040.

The previous prime is 8651764411. The next prime is 8651764469. The reversal of 8651764440 is 444671568.

8651764440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (8651764411) and next prime (8651764469).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 180541 + ... + 223379.

It is an arithmetic number, because the mean of its divisors is an integer number (130126500).

Almost surely, 2^8651764440 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 8651764440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16656192000).

8651764440 is an abundant number, since it is smaller than the sum of its proper divisors (24660619560).

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

8651764440 is a wasteful number, since it uses less digits than its factorization.

8651764440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42887 (or 42877 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 45.

The square root of 8651764440 is about 93014.8613932204. The cubic root of 8651764440 is about 2052.9020520197.

The spelling of 8651764440 in words is "eight billion, six hundred fifty-one million, seven hundred sixty-four thousand, four hundred forty".