67643032116640 has 48 divisors (see below), whose sum is σ = 159902413954920. Its totient is φ = 27041001108480.

The previous prime is 67643032116623. The next prime is 67643032116727. The reversal of 67643032116640 is 4661123034676.

It can be written as a sum of positive squares in 4 ways, for example, as 55756507152784 + 11886524963856 = 7467028^2 + 3447684^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126386331 + ... + 126920410.

Almost surely, 2^{67643032116640} is an apocalyptic number.

It is an amenable number.

67643032116640 is an abundant number, since it is smaller than the sum of its proper divisors (92259381838280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

67643032116640 is a wasteful number, since it uses less digits than its factorization.

67643032116640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253308425 (or 253308417 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 49.

The spelling of 67643032116640 in words is "sixty-seven trillion, six hundred forty-three billion, thirty-two million, one hundred sixteen thousand, six hundred forty".