67010512649 has 4 divisors (see below), whose sum is σ = 67022576964. Its totient is φ = 66998448336.

The previous prime is 67010512633. The next prime is 67010512651. The reversal of 67010512649 is 94621501076.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 57237213049 + 9773299600 = 239243^2 + 98860^2 .

It is a cyclic number.

It is not a de Polignac number, because 67010512649 - 2⁴ = 67010512633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67010517649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6023822 + ... + 6034935.

It is an arithmetic number, because the mean of its divisors is an integer number (16755644241).

Almost surely, 2^67010512649 is an apocalyptic number.

It is an amenable number.

67010512649 is a deficient number, since it is larger than the sum of its proper divisors (12064315).

67010512649 is a wasteful number, since it uses less digits than its factorization.

67010512649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12064314.

The product of its (nonzero) digits is 90720, while the sum is 41.

The spelling of 67010512649 in words is "sixty-seven billion, ten million, five hundred twelve thousand, six hundred forty-nine".