67280920721280 has 1344 divisors, whose sum is σ = 284085681969600. Its totient is φ = 15183424069632.

The previous prime is 67280920721263. The next prime is 67280920721353. The reversal of 67280920721280 is 8212702908276.

67280920721280 is a `hidden beast` number, since 6 + 72 + 80 + 9 + 207 + 212 + 80 = 666.

It is a tau number, because it is divible by the number of its divisors (1344).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 167 ways as a sum of consecutive naturals, for example, 1806035134 + ... + 1806072386.

It is an arithmetic number, because the mean of its divisors is an integer number (211373275275).

Almost surely, 2^{67280920721280} is an apocalyptic number.

67280920721280 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 67280920721280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (142042840984800).

67280920721280 is an abundant number, since it is smaller than the sum of its proper divisors (216804761248320).

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

67280920721280 is an equidigital number, since it uses as much as digits as its factorization.

67280920721280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37383 (or 37349 counting only the distinct ones).

The product of its (nonzero) digits is 2709504, while the sum is 54.

The spelling of 67280920721280 in words is "sixty-seven trillion, two hundred eighty billion, nine hundred twenty million, seven hundred twenty-one thousand, two hundred eighty".