67647389748 has 24 divisors (see below), whose sum is σ = 163286803680. Its totient is φ = 21771573600.

The previous prime is 67647389741. The next prime is 67647389807. The reversal of 67647389748 is 84798374676.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67647389741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97194178 + ... + 97194873.

It is an arithmetic number, because the mean of its divisors is an integer number (6803616820).

Almost surely, 2^67647389748 is an apocalyptic number.

It is an amenable number.

67647389748 is an abundant number, since it is smaller than the sum of its proper divisors (95639413932).

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

67647389748 is a wasteful number, since it uses less digits than its factorization.

67647389748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194389087 (or 194389085 counting only the distinct ones).

The product of its digits is 341397504, while the sum is 69.

The spelling of 67647389748 in words is "sixty-seven billion, six hundred forty-seven million, three hundred eighty-nine thousand, seven hundred forty-eight".