67481134820 has 192 divisors, whose sum is σ = 159667200000. Its totient is φ = 23751636480.

The previous prime is 67481134793. The next prime is 67481134829. The reversal of 67481134820 is 2843118476.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is not an unprimeable number, because it can be changed into a prime (67481134829) 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 63 ways as a sum of consecutive naturals, for example, 339101081 + ... + 339101279.

It is an arithmetic number, because the mean of its divisors is an integer number (831600000).

Almost surely, 2^67481134820 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67481134820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79833600000).

67481134820 is an abundant number, since it is smaller than the sum of its proper divisors (92186065180).

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

67481134820 is a wasteful number, since it uses less digits than its factorization.

67481134820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 586 (or 584 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 44.

The spelling of 67481134820 in words is "sixty-seven billion, four hundred eighty-one million, one hundred thirty-four thousand, eight hundred twenty".