667233145042 has 4 divisors (see below), whose sum is σ = 1000849717566. Its totient is φ = 333616572520.

The previous prime is 667233145039. The next prime is 667233145079. The reversal of 667233145042 is 240541332766.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 666115513281 + 1117631761 = 816159^2 + 33431^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 667233145042.

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, 166808286259 + ... + 166808286262.

Almost surely, 2^667233145042 is an apocalyptic number.

667233145042 is a deficient number, since it is larger than the sum of its proper divisors (333616572524).

667233145042 is a wasteful number, since it uses less digits than its factorization.

667233145042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333616572523.

The product of its (nonzero) digits is 725760, while the sum is 43.

The spelling of 667233145042 in words is "six hundred sixty-seven billion, two hundred thirty-three million, one hundred forty-five thousand, forty-two".