67116561684 has 48 divisors (see below), whose sum is σ = 162149937600. Its totient is φ = 21581473536.

The previous prime is 67116561679. The next prime is 67116561781. The reversal of 67116561684 is 48616561176.

It is a happy number.

67116561684 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 307479 + ... + 478305.

It is an arithmetic number, because the mean of its divisors is an integer number (3378123700).

Almost surely, 2^67116561684 is an apocalyptic number.

It is an amenable number.

67116561684 is an abundant number, since it is smaller than the sum of its proper divisors (95033375916).

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

67116561684 is a wasteful number, since it uses less digits than its factorization.

67116561684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171992 (or 171990 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 51.

The spelling of 67116561684 in words is "sixty-seven billion, one hundred sixteen million, five hundred sixty-one thousand, six hundred eighty-four".