84521447972 has 48 divisors (see below), whose sum is σ = 166480995072. Its totient is φ = 37254349440.

The previous prime is 84521447917. The next prime is 84521447987. The reversal of 84521447972 is 27974412548.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 698678 + ... + 810674.

It is an arithmetic number, because the mean of its divisors is an integer number (3468354064).

Almost surely, 2^84521447972 is an apocalyptic number.

It is an amenable number.

84521447972 is a deficient number, since it is larger than the sum of its proper divisors (81959547100).

84521447972 is a wasteful number, since it uses less digits than its factorization.

84521447972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112668 (or 112666 counting only the distinct ones).

The product of its digits is 4515840, while the sum is 53.

The spelling of 84521447972 in words is "eighty-four billion, five hundred twenty-one million, four hundred forty-seven thousand, nine hundred seventy-two".