67648320042 has 16 divisors (see below), whose sum is σ = 135301072032. Its totient is φ = 22548701360.

The previous prime is 67648320037. The next prime is 67648320049. The reversal of 67648320042 is 24002384676.

It is a junction number, because it is equal to n+sod(n) for n = 67648319976 and 67648320003.

It is not an unprimeable number, because it can be changed into a prime (67648320049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33613 + ... + 369359.

It is an arithmetic number, because the mean of its divisors is an integer number (8456317002).

Almost surely, 2^67648320042 is an apocalyptic number.

67648320042 is an abundant number, since it is smaller than the sum of its proper divisors (67652751990).

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

67648320042 is a wasteful number, since it uses less digits than its factorization.

67648320042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369333.

The product of its (nonzero) digits is 387072, while the sum is 42.

The spelling of 67648320042 in words is "sixty-seven billion, six hundred forty-eight million, three hundred twenty thousand, forty-two".