67447481712 has 160 divisors (see below), whose sum is σ = 189237554688. Its totient is φ = 20577328128.

The previous prime is 67447481671. The next prime is 67447481713. The reversal of 67447481712 is 21718474476.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67447481713) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 76384023 + ... + 76384905.

Almost surely, 2^67447481712 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 67447481712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94618777344).

67447481712 is an abundant number, since it is smaller than the sum of its proper divisors (121790072976).

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

67447481712 is a wasteful number, since it uses less digits than its factorization.

67447481712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1807 (or 1801 counting only the distinct ones).

The product of its digits is 2107392, while the sum is 51.

The spelling of 67447481712 in words is "sixty-seven billion, four hundred forty-seven million, four hundred eighty-one thousand, seven hundred twelve".