8660960195521 has 4 divisors (see below), whose sum is σ = 8699798582272. Its totient is φ = 8622121808772.

The previous prime is 8660960195497. The next prime is 8660960195539. The reversal of 8660960195521 is 1255910690668.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8660960195521 - 2¹³ = 8660960187329 is a prime.

It is a super-2 number, since 2×8660960195521² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8660960195551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19419193041 + ... + 19419193486.

It is an arithmetic number, because the mean of its divisors is an integer number (2174949645568).

Almost surely, 2^{8660960195521} is an apocalyptic number.

It is an amenable number.

8660960195521 is a deficient number, since it is larger than the sum of its proper divisors (38838386751).

8660960195521 is a wasteful number, since it uses less digits than its factorization.

8660960195521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38838386750.

The product of its (nonzero) digits is 6998400, while the sum is 58.

The spelling of 8660960195521 in words is "eight trillion, six hundred sixty billion, nine hundred sixty million, one hundred ninety-five thousand, five hundred twenty-one".