60660551661 has 8 divisors (see below), whose sum is σ = 80918734080. Its totient is φ = 40421368512.

The previous prime is 60660551617. The next prime is 60660551687. The reversal of 60660551661 is 16615506606.

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

It is a de Polignac number, because none of the positive numbers 2^k-60660551661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (60660551261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4742365 + ... + 4755138.

It is an arithmetic number, because the mean of its divisors is an integer number (10114841760).

Almost surely, 2^60660551661 is an apocalyptic number.

It is an amenable number.

60660551661 is a deficient number, since it is larger than the sum of its proper divisors (20258182419).

60660551661 is a wasteful number, since it uses less digits than its factorization.

60660551661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9499635.

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

The spelling of 60660551661 in words is "sixty billion, six hundred sixty million, five hundred fifty-one thousand, six hundred sixty-one".