67227891816 has 64 divisors (see below), whose sum is σ = 168631444800. Its totient is φ = 22334496768.

The previous prime is 67227891793. The next prime is 67227891823. The reversal of 67227891816 is 61819872276.

It is a hoax number, since the sum of its digits (57) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19445160 + ... + 19448616.

It is an arithmetic number, because the mean of its divisors is an integer number (2634866325).

Almost surely, 2^67227891816 is an apocalyptic number.

It is an amenable number.

67227891816 is an abundant number, since it is smaller than the sum of its proper divisors (101403552984).

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

67227891816 is a wasteful number, since it uses less digits than its factorization.

67227891816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5938 (or 5934 counting only the distinct ones).

The product of its digits is 4064256, while the sum is 57.

The spelling of 67227891816 in words is "sixty-seven billion, two hundred twenty-seven million, eight hundred ninety-one thousand, eight hundred sixteen".