667212107344 has 10 divisors (see below), whose sum is σ = 1292723458010. Its totient is φ = 333606053664.

The previous prime is 667212107327. The next prime is 667212107351. The reversal of 667212107344 is 443701212766.

It can be written as a sum of positive squares in only one way, i.e., 355111111744 + 312100995600 = 595912^2 + 558660^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 667212107344.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20850378339 + ... + 20850378370.

It is an arithmetic number, because the mean of its divisors is an integer number (129272345801).

Almost surely, 2^667212107344 is an apocalyptic number.

It is an amenable number.

667212107344 is a deficient number, since it is larger than the sum of its proper divisors (625511350666).

667212107344 is a wasteful number, since it uses less digits than its factorization.

667212107344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41700756717 (or 41700756711 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 43.

The spelling of 667212107344 in words is "six hundred sixty-seven billion, two hundred twelve million, one hundred seven thousand, three hundred forty-four".