67406666734 has 16 divisors (see below), whose sum is σ = 111698046720. Its totient is φ = 30251552760.

The previous prime is 67406666713. The next prime is 67406666741. The reversal of 67406666734 is 43766660476.

It is a happy number.

It is a congruent number.

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, 19390284 + ... + 19393759.

It is an arithmetic number, because the mean of its divisors is an integer number (6981127920).

Almost surely, 2^67406666734 is an apocalyptic number.

67406666734 is a deficient number, since it is larger than the sum of its proper divisors (44291379986).

67406666734 is a wasteful number, since it uses less digits than its factorization.

67406666734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38784135.

The product of its (nonzero) digits is 18289152, while the sum is 55.

The spelling of 67406666734 in words is "sixty-seven billion, four hundred six million, six hundred sixty-six thousand, seven hundred thirty-four".