8641975308642 has 96 divisors (see below), whose sum is σ = 21227339689920. Its totient is φ = 2518947953280.

The previous prime is 8641975308641. The next prime is 8641975308671. The reversal of 8641975308642 is 2468035791468.

8641975308642 is a `hidden beast` number, since 8 + 6 + 4 + 1 + 97 + 530 + 8 + 6 + 4 + 2 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 8641975308642.

It is not an unprimeable number, because it can be changed into a prime (8641975308641) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 75440293 + ... + 75554759.

It is an arithmetic number, because the mean of its divisors is an integer number (221118121770).

It is a 2-persistent number, because it is pandigital, and so is 2⋅8641975308642 = 17283950617284, but 3⋅8641975308642 = 25925925925926 is not.

Almost surely, 2^{8641975308642} is an apocalyptic number.

8641975308642 is an abundant number, since it is smaller than the sum of its proper divisors (12585364381278).

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

8641975308642 is a wasteful number, since it uses less digits than its factorization.

8641975308642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131488 (or 131485 counting only the distinct ones).

The product of its (nonzero) digits is 69672960, while the sum is 63.

The spelling of 8641975308642 in words is "eight trillion, six hundred forty-one billion, nine hundred seventy-five million, three hundred eight thousand, six hundred forty-two".