8660121531 has 8 divisors (see below), whose sum is σ = 11551627584. Its totient is φ = 5771014920.

The previous prime is 8660121451. The next prime is 8660121541. The reversal of 8660121531 is 1351210668.

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

It is not a de Polignac number, because 8660121531 - 2²² = 8655927227 is a prime.

It is a super-2 number, since 2×8660121531² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 8660121492 and 8660121501.

It is not an unprimeable number, because it can be changed into a prime (8660121541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 591421 + ... + 605886.

It is an arithmetic number, because the mean of its divisors is an integer number (1443953448).

Almost surely, 2^8660121531 is an apocalyptic number.

8660121531 is a deficient number, since it is larger than the sum of its proper divisors (2891506053).

8660121531 is a wasteful number, since it uses less digits than its factorization.

8660121531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1199721.

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 8660121531 is about 93059.7739681330. The cubic root of 8660121531 is about 2053.5628331570.

The spelling of 8660121531 in words is "eight billion, six hundred sixty million, one hundred twenty-one thousand, five hundred thirty-one".