67406855880 has 384 divisors, whose sum is σ = 255971076480. Its totient is φ = 14073937920.

The previous prime is 67406855863. The next prime is 67406855899. The reversal of 67406855880 is 8855860476.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 67406855880.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 7410135 + ... + 7419225.

It is an arithmetic number, because the mean of its divisors is an integer number (666591345).

Almost surely, 2^67406855880 is an apocalyptic number.

67406855880 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 67406855880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127985538240).

67406855880 is an abundant number, since it is smaller than the sum of its proper divisors (188564220600).

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

67406855880 is a wasteful number, since it uses less digits than its factorization.

67406855880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9229 (or 9218 counting only the distinct ones).

The product of its (nonzero) digits is 12902400, while the sum is 57.

The spelling of 67406855880 in words is "sixty-seven billion, four hundred six million, eight hundred fifty-five thousand, eight hundred eighty".