8478547776940 has 24 divisors (see below), whose sum is σ = 17805940855920. Its totient is φ = 3391230439488.

The previous prime is 8478547776911. The next prime is 8478547776947. The reversal of 8478547776940 is 496777458748.

It is a hoax number, since the sum of its digits (76) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (8478547776947) 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, 11423182 + ... + 12142741.

It is an arithmetic number, because the mean of its divisors is an integer number (741914202330).

Almost surely, 2^{8478547776940} is an apocalyptic number.

It is an amenable number.

8478547776940 is an abundant number, since it is smaller than the sum of its proper divisors (9327393078980).

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

8478547776940 is a wasteful number, since it uses less digits than its factorization.

8478547776940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23583921 (or 23583919 counting only the distinct ones).

The product of its (nonzero) digits is 2655313920, while the sum is 76.

The spelling of 8478547776940 in words is "eight trillion, four hundred seventy-eight billion, five hundred forty-seven million, seven hundred seventy-six thousand, nine hundred forty".