66006328231 has 8 divisors (see below), whose sum is σ = 66614038128. Its totient is φ = 65400192000.

The previous prime is 66006328217. The next prime is 66006328243. The reversal of 66006328231 is 13282360066.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66006328231 - 2³¹ = 63858844583 is a prime.

It is a super-2 number, since 2×66006328231² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66006323231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 309060 + ... + 477001.

It is an arithmetic number, because the mean of its divisors is an integer number (8326754766).

Almost surely, 2^66006328231 is an apocalyptic number.

66006328231 is a deficient number, since it is larger than the sum of its proper divisors (607709897).

66006328231 is a wasteful number, since it uses less digits than its factorization.

66006328231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 786833.

The product of its (nonzero) digits is 62208, while the sum is 37.

Adding to 66006328231 its reverse (13282360066), we get a palindrome (79288688297).

The spelling of 66006328231 in words is "sixty-six billion, six million, three hundred twenty-eight thousand, two hundred thirty-one".