66328068082531 has 16 divisors (see below), whose sum is σ = 66918086661888. Its totient is φ = 65739349343200.

The previous prime is 66328068082501. The next prime is 66328068082559. The reversal of 66328068082531 is 13528086082366.

It is a cyclic number.

It is not a de Polignac number, because 66328068082531 - 2³⁵ = 66293708344163 is a prime.

It is a super-2 number, since 2×66328068082531² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66328068082501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 569247180 + ... + 569363686.

It is an arithmetic number, because the mean of its divisors is an integer number (4182380416368).

Almost surely, 2^{66328068082531} is an apocalyptic number.

66328068082531 is a deficient number, since it is larger than the sum of its proper divisors (590018579357).

66328068082531 is a wasteful number, since it uses less digits than its factorization.

66328068082531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122042.

The product of its (nonzero) digits is 19906560, while the sum is 58.

The spelling of 66328068082531 in words is "sixty-six trillion, three hundred twenty-eight billion, sixty-eight million, eighty-two thousand, five hundred thirty-one".