67978809114406 has 32 divisors (see below), whose sum is σ = 111911368443840. Its totient is φ = 30825517771776.

The previous prime is 67978809114401. The next prime is 67978809114547. The reversal of 67978809114406 is 60441190887976.

It is a super-2 number, since 2×67978809114406² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67978809114401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68036871 + ... + 69028786.

It is an arithmetic number, because the mean of its divisors is an integer number (3497230263870).

Almost surely, 2^{67978809114406} is an apocalyptic number.

67978809114406 is a deficient number, since it is larger than the sum of its proper divisors (43932559329434).

67978809114406 is a wasteful number, since it uses less digits than its factorization.

67978809114406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137066208.

The product of its (nonzero) digits is 146313216, while the sum is 70.

The spelling of 67978809114406 in words is "sixty-seven trillion, nine hundred seventy-eight billion, eight hundred nine million, one hundred fourteen thousand, four hundred six".