8535721472 has 20 divisors (see below), whose sum is σ = 17054772636. Its totient is φ = 4267860480.

The previous prime is 8535721463. The next prime is 8535721499. The reversal of 8535721472 is 2741275358.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8335154 + ... + 8336177.

Almost surely, 2^8535721472 is an apocalyptic number.

It is an amenable number.

8535721472 is a deficient number, since it is larger than the sum of its proper divisors (8519051164).

8535721472 is an equidigital number, since it uses as much as digits as its factorization.

8535721472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16671349 (or 16671333 counting only the distinct ones).

The product of its digits is 470400, while the sum is 44.

The square root of 8535721472 is about 92388.9683457933. The cubic root of 8535721472 is about 2043.6824324758.

The spelling of 8535721472 in words is "eight billion, five hundred thirty-five million, seven hundred twenty-one thousand, four hundred seventy-two".