8640750078 has 48 divisors (see below), whose sum is σ = 19580520960. Its totient is φ = 2748688272.

The previous prime is 8640750077. The next prime is 8640750091. The reversal of 8640750078 is 8700570468.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8640750077) 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, 157975 + ... + 205517.

It is an arithmetic number, because the mean of its divisors is an integer number (407927520).

Almost surely, 2^8640750078 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8640750078, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9790260480).

8640750078 is an abundant number, since it is smaller than the sum of its proper divisors (10939770882).

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

8640750078 is a wasteful number, since it uses less digits than its factorization.

8640750078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48013 (or 48010 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 45.

The square root of 8640750078 is about 92955.6349986379. The cubic root of 8640750078 is about 2052.0305146335.

The spelling of 8640750078 in words is "eight billion, six hundred forty million, seven hundred fifty thousand, seventy-eight".