660060861846101 has 4 divisors (see below), whose sum is σ = 662514619697100. Its totient is φ = 657607103995104.

The previous prime is 660060861846047. The next prime is 660060861846107. The reversal of 660060861846101 is 101648168060066.

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

It can be written as a sum of positive squares in 2 ways, for example, as 16266911967076 + 643793949879025 = 4033226^2 + 25373095^2 .

It is a cyclic number.

It is not a de Polignac number, because 660060861846101 - 2⁴² = 655662815334997 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 (660060861846107) 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, 1226878925096 + ... + 1226878925633.

It is an arithmetic number, because the mean of its divisors is an integer number (165628654924275).

Almost surely, 2^{660060861846101} is an apocalyptic number.

It is an amenable number.

660060861846101 is a deficient number, since it is larger than the sum of its proper divisors (2453757850999).

660060861846101 is a wasteful number, since it uses less digits than its factorization.

660060861846101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2453757850998.

The product of its (nonzero) digits is 1990656, while the sum is 53.

The spelling of 660060861846101 in words is "six hundred sixty trillion, sixty billion, eight hundred sixty-one million, eight hundred forty-six thousand, one hundred one".