8415216772 has 24 divisors (see below), whose sum is σ = 14781737880. Its totient is φ = 4191889920.

The previous prime is 8415216763. The next prime is 8415216791. The reversal of 8415216772 is 2776125148.

It can be written as a sum of positive squares in 4 ways, for example, as 1698758656 + 6716458116 = 41216^2 + 81954^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1586028 + ... + 1591324.

It is an arithmetic number, because the mean of its divisors is an integer number (615905745).

Almost surely, 2^8415216772 is an apocalyptic number.

It is an amenable number.

8415216772 is a deficient number, since it is larger than the sum of its proper divisors (6366521108).

8415216772 is a wasteful number, since it uses less digits than its factorization.

8415216772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6711 (or 6709 counting only the distinct ones).

The product of its digits is 188160, while the sum is 43.

The square root of 8415216772 is about 91734.4906346571. The cubic root of 8415216772 is about 2034.0194550468.

The spelling of 8415216772 in words is "eight billion, four hundred fifteen million, two hundred sixteen thousand, seven hundred seventy-two".