66206322306123 has 32 divisors (see below), whose sum is σ = 93832066179072. Its totient is φ = 41379484876800.

The previous prime is 66206322306109. The next prime is 66206322306151. The reversal of 66206322306123 is 32160322360266.

It is a happy number.

It is not a de Polignac number, because 66206322306123 - 2¹⁴ = 66206322289739 is a prime.

It is a super-2 number, since 2×66206322306123² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (66206322306823) 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, 21912715 + ... + 24750347.

It is an arithmetic number, because the mean of its divisors is an integer number (2932252068096).

Almost surely, 2^{66206322306123} is an apocalyptic number.

66206322306123 is a deficient number, since it is larger than the sum of its proper divisors (27625743872949).

66206322306123 is a wasteful number, since it uses less digits than its factorization.

66206322306123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2839435.

The product of its (nonzero) digits is 559872, while the sum is 42.

Adding to 66206322306123 its reverse (32160322360266), we get a palindrome (98366644666389).

The spelling of 66206322306123 in words is "sixty-six trillion, two hundred six billion, three hundred twenty-two million, three hundred six thousand, one hundred twenty-three".