68067474668 has 6 divisors (see below), whose sum is σ = 119118080676. Its totient is φ = 34033737332.

The previous prime is 68067474653. The next prime is 68067474677. The reversal of 68067474668 is 86647476086.

It is a super-2 number, since 2×68067474668² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 68067474668.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8508434330 + ... + 8508434337.

It is an arithmetic number, because the mean of its divisors is an integer number (19853013446).

Almost surely, 2^68067474668 is an apocalyptic number.

It is an amenable number.

68067474668 is a deficient number, since it is larger than the sum of its proper divisors (51050606008).

68067474668 is a wasteful number, since it uses less digits than its factorization.

68067474668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17016868671 (or 17016868669 counting only the distinct ones).

The product of its (nonzero) digits is 65028096, while the sum is 62.

The spelling of 68067474668 in words is "sixty-eight billion, sixty-seven million, four hundred seventy-four thousand, six hundred sixty-eight".