667701431385 has 8 divisors (see below), whose sum is σ = 1068322290240. Its totient is φ = 356107430064.

The previous prime is 667701431359. The next prime is 667701431389. The reversal of 667701431385 is 583134107766.

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

It is not a de Polignac number, because 667701431385 - 2²¹ = 667699334233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (667701431389) 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, 22256714365 + ... + 22256714394.

It is an arithmetic number, because the mean of its divisors is an integer number (133540286280).

Almost surely, 2^667701431385 is an apocalyptic number.

It is an amenable number.

667701431385 is a deficient number, since it is larger than the sum of its proper divisors (400620858855).

667701431385 is a wasteful number, since it uses less digits than its factorization.

667701431385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44513428767.

The product of its (nonzero) digits is 2540160, while the sum is 51.

The spelling of 667701431385 in words is "six hundred sixty-seven billion, seven hundred one million, four hundred thirty-one thousand, three hundred eighty-five".