8651440512 has 192 divisors, whose sum is σ = 29248324560. Its totient is φ = 2419937280.

The previous prime is 8651440507. The next prime is 8651440517. The reversal of 8651440512 is 2150441568.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (8651440507) and next prime (8651440517).

It is a tau number, because it is divible by the number of its divisors (192).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8651440517) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 138478 + ... + 190994.

Almost surely, 2^8651440512 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 8651440512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14624162280).

8651440512 is an abundant number, since it is smaller than the sum of its proper divisors (20596884048).

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

8651440512 is a wasteful number, since it uses less digits than its factorization.

8651440512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52561 (or 52546 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

The square root of 8651440512 is about 93013.1201067892. The cubic root of 8651440512 is about 2052.8764310125.

The spelling of 8651440512 in words is "eight billion, six hundred fifty-one million, four hundred forty thousand, five hundred twelve".