67426970856 has 64 divisors (see below), whose sum is σ = 198862970880. Its totient is φ = 18643400640.

The previous prime is 67426970843. The next prime is 67426970951. The reversal of 67426970856 is 65807962476.

It is a self number, because there is not a number n which added to its sum of digits gives 67426970856.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6468196 + ... + 6478611.

It is an arithmetic number, because the mean of its divisors is an integer number (3107233920).

Almost surely, 2^67426970856 is an apocalyptic number.

It is an amenable number.

67426970856 is an abundant number, since it is smaller than the sum of its proper divisors (131436000024).

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

67426970856 is a wasteful number, since it uses less digits than its factorization.

67426970856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12946854 (or 12946850 counting only the distinct ones).

The product of its (nonzero) digits is 30481920, while the sum is 60.

The spelling of 67426970856 in words is "sixty-seven billion, four hundred twenty-six million, nine hundred seventy thousand, eight hundred fifty-six".