67749343713 has 12 divisors (see below), whose sum is σ = 97987429540. Its totient is φ = 45107490816.

The previous prime is 67749343693. The next prime is 67749343723. The reversal of 67749343713 is 31734394776.

It can be written as a sum of positive squares in 2 ways, for example, as 13426320384 + 54323023329 = 115872^2 + 233073^2 .

It is not a de Polignac number, because 67749343713 - 2⁸ = 67749343457 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 67749343713.

It is not an unprimeable number, because it can be changed into a prime (67749343723) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4887556 + ... + 4901397.

Almost surely, 2^67749343713 is an apocalyptic number.

It is an amenable number.

67749343713 is a deficient number, since it is larger than the sum of its proper divisors (30238085827).

67749343713 is a wasteful number, since it uses less digits than its factorization.

67749343713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9789728 (or 9789725 counting only the distinct ones).

The product of its digits is 8001504, while the sum is 54.

The spelling of 67749343713 in words is "sixty-seven billion, seven hundred forty-nine million, three hundred forty-three thousand, seven hundred thirteen".