60660561561 has 8 divisors (see below), whose sum is σ = 80904741120. Its totient is φ = 40428378192.

The previous prime is 60660561557. The next prime is 60660561571. The reversal of 60660561561 is 16516506606.

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

It is not a de Polignac number, because 60660561561 - 2² = 60660561557 is a prime.

It is not an unprimeable number, because it can be changed into a prime (60660561571) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2987241 + ... + 3007478.

It is an arithmetic number, because the mean of its divisors is an integer number (10113092640).

Almost surely, 2^60660561561 is an apocalyptic number.

It is an amenable number.

60660561561 is a deficient number, since it is larger than the sum of its proper divisors (20244179559).

60660561561 is a wasteful number, since it uses less digits than its factorization.

60660561561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5998095.

The product of its (nonzero) digits is 194400, while the sum is 42.

The spelling of 60660561561 in words is "sixty billion, six hundred sixty million, five hundred sixty-one thousand, five hundred sixty-one".