67421541996 has 120 divisors (see below), whose sum is σ = 177649441200. Its totient is φ = 22296342528.

The previous prime is 67421541959. The next prime is 67421541997. The reversal of 67421541996 is 69914512476.

67421541996 is a `hidden beast` number, since 6 + 7 + 4 + 2 + 1 + 541 + 9 + 96 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (67421541997) 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 39 ways as a sum of consecutive naturals, for example, 55399180 + ... + 55400396.

It is an arithmetic number, because the mean of its divisors is an integer number (1480412010).

Almost surely, 2^67421541996 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 67421541996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88824720600).

67421541996 is an abundant number, since it is smaller than the sum of its proper divisors (110227899204).

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

67421541996 is a wasteful number, since it uses less digits than its factorization.

67421541996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2445 (or 2434 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 54.

The spelling of 67421541996 in words is "sixty-seven billion, four hundred twenty-one million, five hundred forty-one thousand, nine hundred ninety-six".