8651533939801 has 3 divisors (see below), whose sum is σ = 8651536881151. Its totient is φ = 8651530998452.

The previous prime is 8651533939799. The next prime is 8651533939813. The reversal of 8651533939801 is 1089393351568.

The square root of 8651533939801 is 2941349.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 7381540176201 + 1269993763600 = 2716899^2 + 1126940^2 .

It is not a de Polignac number, because 8651533939801 - 2¹ = 8651533939799 is a prime.

It is a super-2 number, since 2×8651533939801² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8651533939801.

It is not an unprimeable number, because it can be changed into a prime (8651533939001) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1470675 + ... + 4412023.

Almost surely, 2^{8651533939801} is an apocalyptic number.

8651533939801 is the 2941349-th square number.

8651533939801 is the 1470675-th centered octagonal number.

It is an amenable number.

8651533939801 is a deficient number, since it is larger than the sum of its proper divisors (2941350).

8651533939801 is an frugal number, since it uses more digits than its factorization.

8651533939801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5882698 (or 2941349 counting only the distinct ones).

The product of its (nonzero) digits is 20995200, while the sum is 61.

The spelling of 8651533939801 in words is "eight trillion, six hundred fifty-one billion, five hundred thirty-three million, nine hundred thirty-nine thousand, eight hundred one".