6667406780334 has 8 divisors (see below), whose sum is σ = 13334813560680. Its totient is φ = 2222468926776.

The previous prime is 6667406780303. The next prime is 6667406780347. The reversal of 6667406780334 is 4330876047666.

It is a happy number.

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

6667406780334 is an admirable number.

It is a super-2 number, since 2×6667406780334² (a number of 26 digits) contains 22 as substring.

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 in 3 ways as a sum of consecutive naturals, for example, 555617231689 + ... + 555617231700.

It is an arithmetic number, because the mean of its divisors is an integer number (1666851695085).

Almost surely, 2^{6667406780334} is an apocalyptic number.

6667406780334 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

6667406780334 is a wasteful number, since it uses less digits than its factorization.

6667406780334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1111234463394.

The product of its (nonzero) digits is 73156608, while the sum is 60.

The spelling of 6667406780334 in words is "six trillion, six hundred sixty-seven billion, four hundred six million, seven hundred eighty thousand, three hundred thirty-four".