67144770513 has 24 divisors (see below), whose sum is σ = 100265573408. Its totient is φ = 43271407872.

The previous prime is 67144770467. The next prime is 67144770541. The reversal of 67144770513 is 31507744176.

67144770513 is a `hidden beast` number, since 67 + 1 + 4 + 4 + 7 + 70 + 513 = 666.

It is not a de Polignac number, because 67144770513 - 2⁶ = 67144770449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67144775513) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 856795 + ... + 931872.

Almost surely, 2^67144770513 is an apocalyptic number.

It is an amenable number.

67144770513 is a deficient number, since it is larger than the sum of its proper divisors (33120802895).

67144770513 is a wasteful number, since it uses less digits than its factorization.

67144770513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1788813 (or 1788810 counting only the distinct ones).

The product of its (nonzero) digits is 493920, while the sum is 45.

The spelling of 67144770513 in words is "sixty-seven billion, one hundred forty-four million, seven hundred seventy thousand, five hundred thirteen".