8452871661 has 8 divisors (see below), whose sum is σ = 12137456800. Its totient is φ = 5201767152.

The previous prime is 8452871659. The next prime is 8452871671. The reversal of 8452871661 is 1661782548.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8452871661 - 2¹ = 8452871659 is a prime.

It is a super-3 number, since 3×8452871661³ (a number of 31 digits) contains 333 as substring.

It is the 91940-th Hogben number.

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 8452871661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8452871671) by changing a digit.

It is a nontrivial repunit in base 91939.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108370111 + ... + 108370188.

It is an arithmetic number, because the mean of its divisors is an integer number (1517182100).

Almost surely, 2^8452871661 is an apocalyptic number.

It is an amenable number.

8452871661 is a deficient number, since it is larger than the sum of its proper divisors (3684585139).

8452871661 is a wasteful number, since it uses less digits than its factorization.

8452871661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216740315.

The product of its digits is 645120, while the sum is 48.

The square root of 8452871661 is about 91939.5000040788. The cubic root of 8452871661 is about 2037.0487619097.

The spelling of 8452871661 in words is "eight billion, four hundred fifty-two million, eight hundred seventy-one thousand, six hundred sixty-one".