67231321672 has 24 divisors (see below), whose sum is σ = 130256328150. Its totient is φ = 32531280960.

The previous prime is 67231321637. The next prime is 67231321697. The reversal of 67231321672 is 27612313276.

67231321672 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 45145200676 + 22086120996 = 212474^2 + 148614^2 .

It is a super-2 number, since 2×67231321672² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4364797 + ... + 4380172.

Almost surely, 2^67231321672 is an apocalyptic number.

67231321672 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

67231321672 is a deficient number, since it is larger than the sum of its proper divisors (63025006478).

67231321672 is a wasteful number, since it uses less digits than its factorization.

67231321672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8745037 (or 8745002 counting only the distinct ones).

The product of its digits is 127008, while the sum is 40.

The spelling of 67231321672 in words is "sixty-seven billion, two hundred thirty-one million, three hundred twenty-one thousand, six hundred seventy-two".