667443550761042 has 16 divisors (see below), whose sum is σ = 1456240474387872. Its totient is φ = 202255621442720.

The previous prime is 667443550761023. The next prime is 667443550761059. The reversal of 667443550761042 is 240167055344766.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5056390536003 + ... + 5056390536134.

It is an arithmetic number, because the mean of its divisors is an integer number (91015029649242).

Almost surely, 2^{667443550761042} is an apocalyptic number.

667443550761042 is an abundant number, since it is smaller than the sum of its proper divisors (788796923626830).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

667443550761042 is a wasteful number, since it uses less digits than its factorization.

667443550761042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10112781072153.

The product of its (nonzero) digits is 101606400, while the sum is 60.

The spelling of 667443550761042 in words is "six hundred sixty-seven trillion, four hundred forty-three billion, five hundred fifty million, seven hundred sixty-one thousand, forty-two".