67135919236 has 9 divisors (see below), whose sum is σ = 117488765541. Its totient is φ = 33567700512.

The previous prime is 67135919233. The next prime is 67135919243. The reversal of 67135919236 is 63291953176.

The square root of 67135919236 is 259106.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 25908100 + 67110011136 = 5090^2 + 259056^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67135919231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 453436 + ... + 582988.

Almost surely, 2^67135919236 is an apocalyptic number.

67135919236 is the 259106-th square number.

It is an amenable number.

67135919236 is a deficient number, since it is larger than the sum of its proper divisors (50352846305).

67135919236 is an frugal number, since it uses more digits than its factorization.

67135919236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259110 (or 129555 counting only the distinct ones).

The product of its digits is 1837080, while the sum is 52.

The spelling of 67135919236 in words is "sixty-seven billion, one hundred thirty-five million, nine hundred nineteen thousand, two hundred thirty-six".