67170055680 has 1280 divisors, whose sum is σ = 300280780800. Its totient is φ = 13854965760.

The previous prime is 67170055679. The next prime is 67170055709. The reversal of 67170055680 is 8655007176.

67170055680 is a `hidden beast` number, since 6 + 7 + 17 + 0 + 0 + 556 + 80 = 666.

It is a tau number, because it is divible by the number of its divisors (1280).

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

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 127 ways as a sum of consecutive naturals, for example, 371105190 + ... + 371105370.

It is an arithmetic number, because the mean of its divisors is an integer number (234594360).

Almost surely, 2^67170055680 is an apocalyptic number.

67170055680 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67170055680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (150140390400).

67170055680 is an abundant number, since it is smaller than the sum of its proper divisors (233110725120).

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

67170055680 is a wasteful number, since it uses less digits than its factorization.

67170055680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292 (or 270 counting only the distinct ones).

The product of its (nonzero) digits is 352800, while the sum is 45.

The spelling of 67170055680 in words is "sixty-seven billion, one hundred seventy million, fifty-five thousand, six hundred eighty".