67471212816 has 1120 divisors, whose sum is σ = 258139668480. Its totient is φ = 16628198400.

The previous prime is 67471212811. The next prime is 67471212833. The reversal of 67471212816 is 61821217476.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (67471212811) by changing a digit.

It is a polite number, since it can be written in 223 ways as a sum of consecutive naturals, for example, 1106085426 + ... + 1106085486.

Almost surely, 2^67471212816 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67471212816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129069834240).

67471212816 is an abundant number, since it is smaller than the sum of its proper divisors (190668455664).

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

67471212816 is a wasteful number, since it uses less digits than its factorization.

67471212816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167 (or 146 counting only the distinct ones).

The product of its digits is 225792, while the sum is 45.

The spelling of 67471212816 in words is "sixty-seven billion, four hundred seventy-one million, two hundred twelve thousand, eight hundred sixteen".