8431664652 has 48 divisors (see below), whose sum is σ = 21994026880. Its totient is φ = 2793306384.

The previous prime is 8431664639. The next prime is 8431664669. The reversal of 8431664652 is 2564661348.

It is a super-2 number, since 2×8431664652² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 8431664598 and 8431664607.

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, 221878 + ... + 257085.

Almost surely, 2^8431664652 is an apocalyptic number.

It is an amenable number.

8431664652 is an abundant number, since it is smaller than the sum of its proper divisors (13562362228).

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

8431664652 is a wasteful number, since it uses less digits than its factorization.

8431664652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479139 (or 479131 counting only the distinct ones).

The product of its digits is 829440, while the sum is 45.

The square root of 8431664652 is about 91824.0962492961. The cubic root of 8431664652 is about 2035.3437835767.

The spelling of 8431664652 in words is "eight billion, four hundred thirty-one million, six hundred sixty-four thousand, six hundred fifty-two".