68069935634 has 4 divisors (see below), whose sum is σ = 102104903454. Its totient is φ = 34034967816.

The previous prime is 68069935607. The next prime is 68069935649. The reversal of 68069935634 is 43653996086.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43653996086 = 2 ⋅21826998043.

It can be written as a sum of positive squares in only one way, i.e., 67842016225 + 227919409 = 260465^2 + 15097^2 .

It is a super-2 number, since 2×68069935634² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 17017483907 + ... + 17017483910.

Almost surely, 2^68069935634 is an apocalyptic number.

68069935634 is a deficient number, since it is larger than the sum of its proper divisors (34034967820).

68069935634 is a wasteful number, since it uses less digits than its factorization.

68069935634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34034967819.

The product of its (nonzero) digits is 25194240, while the sum is 59.

The spelling of 68069935634 in words is "sixty-eight billion, sixty-nine million, nine hundred thirty-five thousand, six hundred thirty-four".