67984461678 has 64 divisors (see below), whose sum is σ = 169212096000. Its totient is φ = 17767257984.

The previous prime is 67984461667. The next prime is 67984461719. The reversal of 67984461678 is 87616448976.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1445713 + ... + 1491996.

It is an arithmetic number, because the mean of its divisors is an integer number (2643939000).

Almost surely, 2^67984461678 is an apocalyptic number.

67984461678 is an abundant number, since it is smaller than the sum of its proper divisors (101227634322).

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

67984461678 is a wasteful number, since it uses less digits than its factorization.

67984461678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2937769.

The product of its digits is 97542144, while the sum is 66.

The spelling of 67984461678 in words is "sixty-seven billion, nine hundred eighty-four million, four hundred sixty-one thousand, six hundred seventy-eight".