67231122720 has 48 divisors (see below), whose sum is σ = 211778038080. Its totient is φ = 17928299264.

The previous prime is 67231122701. The next prime is 67231122743. The reversal of 67231122720 is 2722113276.

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70031940 + ... + 70032899.

It is an arithmetic number, because the mean of its divisors is an integer number (4412042460).

Almost surely, 2^67231122720 is an apocalyptic number.

67231122720 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

67231122720 is an abundant number, since it is smaller than the sum of its proper divisors (144546915360).

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

67231122720 is a wasteful number, since it uses less digits than its factorization.

67231122720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140064857 (or 140064849 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 33.

Adding to 67231122720 its reverse (2722113276), we get a palindrome (69953235996).

The spelling of 67231122720 in words is "sixty-seven billion, two hundred thirty-one million, one hundred twenty-two thousand, seven hundred twenty".