8547778540 has 36 divisors (see below), whose sum is σ = 20881004256. Its totient is φ = 2930666592.

The previous prime is 8547778531. The next prime is 8547778543. The reversal of 8547778540 is 458777458.

It is not an unprimeable number, because it can be changed into a prime (8547778543) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4360132 + ... + 4362091.

It is an arithmetic number, because the mean of its divisors is an integer number (580027896).

Almost surely, 2^8547778540 is an apocalyptic number.

It is an amenable number.

8547778540 is an abundant number, since it is smaller than the sum of its proper divisors (12333225716).

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

8547778540 is a wasteful number, since it uses less digits than its factorization.

8547778540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8722246 (or 8722237 counting only the distinct ones).

The product of its (nonzero) digits is 8780800, while the sum is 55.

The square root of 8547778540 is about 92454.1969842365. The cubic root of 8547778540 is about 2044.6442424087.

The spelling of 8547778540 in words is "eight billion, five hundred forty-seven million, seven hundred seventy-eight thousand, five hundred forty".