67791028020 has 48 divisors (see below), whose sum is σ = 189827514240. Its totient is φ = 18076404096.

The previous prime is 67791028013. The next prime is 67791028021. The reversal of 67791028020 is 2082019776.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67791028021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1217346 + ... + 1271814.

It is an arithmetic number, because the mean of its divisors is an integer number (3954739880).

Almost surely, 2^67791028020 is an apocalyptic number.

67791028020 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

67791028020 is an abundant number, since it is smaller than the sum of its proper divisors (122036486220).

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

67791028020 is a wasteful number, since it uses less digits than its factorization.

67791028020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75224 (or 75222 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 42.

The spelling of 67791028020 in words is "sixty-seven billion, seven hundred ninety-one million, twenty-eight thousand, twenty".