69664018231 has 2 divisors, whose sum is σ = 69664018232. Its totient is φ = 69664018230.

The previous prime is 69664018223. The next prime is 69664018247. The reversal of 69664018231 is 13281046696.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 69664018231 - 2³ = 69664018223 is a prime.

It is a super-2 number, since 2×69664018231² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (69664018201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34832009115 + 34832009116.

It is an arithmetic number, because the mean of its divisors is an integer number (34832009116).

Almost surely, 2^69664018231 is an apocalyptic number.

69664018231 is a deficient number, since it is larger than the sum of its proper divisors (1).

69664018231 is an equidigital number, since it uses as much as digits as its factorization.

69664018231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 373248, while the sum is 46.

The spelling of 69664018231 in words is "sixty-nine billion, six hundred sixty-four million, eighteen thousand, two hundred thirty-one".