67742915528 has 36 divisors (see below), whose sum is σ = 134954051715. Its totient is φ = 31873129728.

The previous prime is 67742915507. The next prime is 67742915543. The reversal of 67742915528 is 82551924776.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 5 ways, for example, as 33555645124 + 34187270404 = 183182^2 + 184898^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=184042.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 12512150 + ... + 12517562.

Almost surely, 2^67742915528 is an apocalyptic number.

67742915528 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

67742915528 is a deficient number, since it is larger than the sum of its proper divisors (67211136187).

67742915528 is an frugal number, since it uses more digits than its factorization.

67742915528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10866 (or 5432 counting only the distinct ones).

The product of its digits is 8467200, while the sum is 56.

The spelling of 67742915528 in words is "sixty-seven billion, seven hundred forty-two million, nine hundred fifteen thousand, five hundred twenty-eight".