8461312280 has 16 divisors (see below), whose sum is σ = 19037952720. Its totient is φ = 3384524896.

The previous prime is 8461312273. The next prime is 8461312283. The reversal of 8461312280 is 822131648.

It is a self number, because there is not a number n which added to its sum of digits gives 8461312280.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8461312283) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105766364 + ... + 105766443.

It is an arithmetic number, because the mean of its divisors is an integer number (1189872045).

Almost surely, 2^8461312280 is an apocalyptic number.

It is an amenable number.

8461312280 is an abundant number, since it is smaller than the sum of its proper divisors (10576640440).

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

8461312280 is a wasteful number, since it uses less digits than its factorization.

8461312280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211532818 (or 211532814 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 8461312280 is about 91985.3916662858. The cubic root of 8461312280 is about 2037.7265683537.

The spelling of 8461312280 in words is "eight billion, four hundred sixty-one million, three hundred twelve thousand, two hundred eighty".