68134742636 has 24 divisors (see below), whose sum is σ = 123367860000. Its totient is φ = 32887172864.

The previous prime is 68134742633. The next prime is 68134742651. The reversal of 68134742636 is 63624743186.

It is not an unprimeable number, because it can be changed into a prime (68134742633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 702545 + ... + 793623.

It is an arithmetic number, because the mean of its divisors is an integer number (5140327500).

Almost surely, 2^68134742636 is an apocalyptic number.

It is an amenable number.

68134742636 is a deficient number, since it is larger than the sum of its proper divisors (55233117364).

68134742636 is a wasteful number, since it uses less digits than its factorization.

68134742636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97561 (or 97559 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 50.

The spelling of 68134742636 in words is "sixty-eight billion, one hundred thirty-four million, seven hundred forty-two thousand, six hundred thirty-six".