67216532434 has 4 divisors (see below), whose sum is σ = 100824798654. Its totient is φ = 33608266216.

The previous prime is 67216532401. The next prime is 67216532437. The reversal of 67216532434 is 43423561276.

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

It can be written as a sum of positive squares in only one way, i.e., 43670550625 + 23545981809 = 208975^2 + 153447^2 .

It is not an unprimeable number, because it can be changed into a prime (67216532437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16804133107 + ... + 16804133110.

Almost surely, 2^67216532434 is an apocalyptic number.

67216532434 is a deficient number, since it is larger than the sum of its proper divisors (33608266220).

67216532434 is a wasteful number, since it uses less digits than its factorization.

67216532434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33608266219.

The product of its digits is 725760, while the sum is 43.

The spelling of 67216532434 in words is "sixty-seven billion, two hundred sixteen million, five hundred thirty-two thousand, four hundred thirty-four".