67543613764 has 18 divisors (see below), whose sum is σ = 129923770382. Its totient is φ = 30701642400.

The previous prime is 67543613743. The next prime is 67543613773. The reversal of 67543613764 is 46731634576.

It can be written as a sum of positive squares in only one way, i.e., 66084984900 + 1458628864 = 257070^2 + 38192^2 .

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 5 ways as a sum of consecutive naturals, for example, 69775977 + ... + 69776944.

Almost surely, 2^67543613764 is an apocalyptic number.

It is an amenable number.

67543613764 is a deficient number, since it is larger than the sum of its proper divisors (62380156618).

67543613764 is a wasteful number, since it uses less digits than its factorization.

67543613764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139552947 (or 139552934 counting only the distinct ones).

The product of its digits is 7620480, while the sum is 52.

The spelling of 67543613764 in words is "sixty-seven billion, five hundred forty-three million, six hundred thirteen thousand, seven hundred sixty-four".