66560342505 has 32 divisors (see below), whose sum is σ = 117663715584. Its totient is φ = 31958040576.

The previous prime is 66560342501. The next prime is 66560342543. The reversal of 66560342505 is 50524306566.

It is not a de Polignac number, because 66560342505 - 2² = 66560342501 is a prime.

It is a super-3 number, since 3×66560342505³ (a number of 33 digits) contains 333 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (66560342501) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5668504 + ... + 5680233.

It is an arithmetic number, because the mean of its divisors is an integer number (3676991112).

Almost surely, 2^66560342505 is an apocalyptic number.

It is an amenable number.

66560342505 is a deficient number, since it is larger than the sum of its proper divisors (51103373079).

66560342505 is a wasteful number, since it uses less digits than its factorization.

66560342505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11348785.

The product of its (nonzero) digits is 648000, while the sum is 42.

The spelling of 66560342505 in words is "sixty-six billion, five hundred sixty million, three hundred forty-two thousand, five hundred five".