8640277331688 has 32 divisors (see below), whose sum is σ = 24000770366400. Its totient is φ = 2880092443824.

The previous prime is 8640277331681. The next prime is 8640277331689. The reversal of 8640277331688 is 8861337720468.

8640277331688 is a `hidden beast` number, since 8 + 6 + 40 + 277 + 3 + 316 + 8 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (8640277331681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20000641756 + ... + 20000642187.

It is an arithmetic number, because the mean of its divisors is an integer number (750024073950).

Almost surely, 2^{8640277331688} is an apocalyptic number.

It is an amenable number.

8640277331688 is an abundant number, since it is smaller than the sum of its proper divisors (15360493034712).

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

8640277331688 is a wasteful number, since it uses less digits than its factorization.

8640277331688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40001283958 (or 40001283948 counting only the distinct ones).

The product of its (nonzero) digits is 65028096, while the sum is 63.

The spelling of 8640277331688 in words is "eight trillion, six hundred forty billion, two hundred seventy-seven million, three hundred thirty-one thousand, six hundred eighty-eight".