67740517045 has 32 divisors (see below), whose sum is σ = 84509157600. Its totient is φ = 52082528256.

The previous prime is 67740517037. The next prime is 67740517057. The reversal of 67740517045 is 54071504776.

It can be written as a sum of positive squares in 16 ways, for example, as 966339396 + 66774177649 = 31086^2 + 258407^2 .

It is a cyclic number.

It is not a de Polignac number, because 67740517045 - 2³ = 67740517037 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 67740516986 and 67740517004.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26490907 + ... + 26493463.

It is an arithmetic number, because the mean of its divisors is an integer number (2640911175).

Almost surely, 2^67740517045 is an apocalyptic number.

It is an amenable number.

67740517045 is a deficient number, since it is larger than the sum of its proper divisors (16768640555).

67740517045 is a wasteful number, since it uses less digits than its factorization.

67740517045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4297.

The product of its (nonzero) digits is 823200, while the sum is 46.

The spelling of 67740517045 in words is "sixty-seven billion, seven hundred forty million, five hundred seventeen thousand, forty-five".