67481545860 has 144 divisors (see below), whose sum is σ = 211449917952. Its totient is φ = 17401996800.

The previous prime is 67481545843. The next prime is 67481545861. The reversal of 67481545860 is 6854518476.

67481545860 is a `hidden beast` number, since 6 + 7 + 4 + 8 + 1 + 54 + 586 + 0 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 67481545797 and 67481545806.

It is not an unprimeable number, because it can be changed into a prime (67481545861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9599667 + ... + 9606693.

It is an arithmetic number, because the mean of its divisors is an integer number (1468402208).

Almost surely, 2^67481545860 is an apocalyptic number.

67481545860 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 67481545860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105724958976).

67481545860 is an abundant number, since it is smaller than the sum of its proper divisors (143968372092).

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

67481545860 is a wasteful number, since it uses less digits than its factorization.

67481545860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8794 (or 8789 counting only the distinct ones).

The product of its (nonzero) digits is 6451200, while the sum is 54.

The spelling of 67481545860 in words is "sixty-seven billion, four hundred eighty-one million, five hundred forty-five thousand, eight hundred sixty".