67433401680 has 80 divisors (see below), whose sum is σ = 209156196480. Its totient is φ = 17972550144.

The previous prime is 67433401663. The next prime is 67433401703. The reversal of 67433401680 is 8610433476.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 376194 + ... + 525726.

It is an arithmetic number, because the mean of its divisors is an integer number (2614452456).

Almost surely, 2^67433401680 is an apocalyptic number.

67433401680 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

67433401680 is an abundant number, since it is smaller than the sum of its proper divisors (141722794800).

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

67433401680 is a wasteful number, since it uses less digits than its factorization.

67433401680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151428 (or 151422 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 42.

The spelling of 67433401680 in words is "sixty-seven billion, four hundred thirty-three million, four hundred one thousand, six hundred eighty".