67138473754856 has 64 divisors (see below), whose sum is σ = 146592707057280. Its totient is φ = 28228796294400.

The previous prime is 67138473754841. The next prime is 67138473754871. The reversal of 67138473754856 is 65845737483176.

It is an interprime number because it is at equal distance from previous prime (67138473754841) and next prime (67138473754871).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42911531 + ... + 44448581.

It is an arithmetic number, because the mean of its divisors is an integer number (2290511047770).

Almost surely, 2^{67138473754856} is an apocalyptic number.

It is an amenable number.

67138473754856 is an abundant number, since it is smaller than the sum of its proper divisors (79454233302424).

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

67138473754856 is a wasteful number, since it uses less digits than its factorization.

67138473754856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1551834 (or 1551830 counting only the distinct ones).

The product of its digits is 2844979200, while the sum is 74.

The spelling of 67138473754856 in words is "sixty-seven trillion, one hundred thirty-eight billion, four hundred seventy-three million, seven hundred fifty-four thousand, eight hundred fifty-six".