667194009442 has 16 divisors (see below), whose sum is σ = 1009203017472. Its totient is φ = 330798351520.

The previous prime is 667194009437. The next prime is 667194009451. The reversal of 667194009442 is 244900491766.

It is a self number, because there is not a number n which added to its sum of digits gives 667194009442.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1086838 + ... + 1586065.

It is an arithmetic number, because the mean of its divisors is an integer number (63075188592).

Almost surely, 2^667194009442 is an apocalyptic number.

667194009442 is a deficient number, since it is larger than the sum of its proper divisors (342009008030).

667194009442 is a wasteful number, since it uses less digits than its factorization.

667194009442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2673953.

The product of its (nonzero) digits is 2612736, while the sum is 52.

The spelling of 667194009442 in words is "six hundred sixty-seven billion, one hundred ninety-four million, nine thousand, four hundred forty-two".