320666684127 has 16 divisors (see below), whose sum is σ = 428513690880. Its totient is φ = 213299194752.

The previous prime is 320666684123. The next prime is 320666684131. The reversal of 320666684127 is 721486666023.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (320666684123) and next prime (320666684131).

It is not a de Polignac number, because 320666684127 - 2² = 320666684123 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 320666684127.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320666684123) 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, 2775303 + ... + 2888535.

It is an arithmetic number, because the mean of its divisors is an integer number (26782105680).

Almost surely, 2^320666684127 is an apocalyptic number.

320666684127 is a deficient number, since it is larger than the sum of its proper divisors (107847006753).

320666684127 is a wasteful number, since it uses less digits than its factorization.

320666684127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115342.

The product of its (nonzero) digits is 3483648, while the sum is 51.

The spelling of 320666684127 in words is "three hundred twenty billion, six hundred sixty-six million, six hundred eighty-four thousand, one hundred twenty-seven".