66420522310323 has 32 divisors (see below), whose sum is σ = 95721426570240. Its totient is φ = 40841689750400.

The previous prime is 66420522310321. The next prime is 66420522310367. The reversal of 66420522310323 is 32301322502466.

It is a cyclic number.

It is not a de Polignac number, because 66420522310323 - 2¹ = 66420522310321 is a prime.

It is a super-2 number, since 2×66420522310323² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (66420522310321) 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, 19923903 + ... + 23017448.

It is an arithmetic number, because the mean of its divisors is an integer number (2991294580320).

Almost surely, 2^{66420522310323} is an apocalyptic number.

66420522310323 is a deficient number, since it is larger than the sum of its proper divisors (29300904259917).

66420522310323 is a wasteful number, since it uses less digits than its factorization.

66420522310323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42942179.

The product of its (nonzero) digits is 311040, while the sum is 39.

Adding to 66420522310323 its reverse (32301322502466), we get a palindrome (98721844812789).

The spelling of 66420522310323 in words is "sixty-six trillion, four hundred twenty billion, five hundred twenty-two million, three hundred ten thousand, three hundred twenty-three".