60661366847 has 4 divisors (see below), whose sum is σ = 61012010760. Its totient is φ = 60310722936.

The previous prime is 60661366841. The next prime is 60661366867. The reversal of 60661366847 is 74866316606.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-60661366847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (60661366841) 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 3 ways as a sum of consecutive naturals, for example, 175321697 + ... + 175322042.

It is an arithmetic number, because the mean of its divisors is an integer number (15253002690).

Almost surely, 2^60661366847 is an apocalyptic number.

60661366847 is a deficient number, since it is larger than the sum of its proper divisors (350643913).

60661366847 is a wasteful number, since it uses less digits than its factorization.

60661366847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350643912.

The product of its (nonzero) digits is 5225472, while the sum is 53.

The spelling of 60661366847 in words is "sixty billion, six hundred sixty-one million, three hundred sixty-six thousand, eight hundred forty-seven".