68674739408 has 20 divisors (see below), whose sum is σ = 145153426848. Its totient is φ = 31215790560.

The previous prime is 68674739389. The next prime is 68674739431. The reversal of 68674739408 is 80493747686.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 195098516 + ... + 195098867.

Almost surely, 2^68674739408 is an apocalyptic number.

It is an amenable number.

68674739408 is an abundant number, since it is smaller than the sum of its proper divisors (76478687440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68674739408 is a wasteful number, since it uses less digits than its factorization.

68674739408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390197402 (or 390197396 counting only the distinct ones).

The product of its (nonzero) digits is 48771072, while the sum is 62.

The spelling of 68674739408 in words is "sixty-eight billion, six hundred seventy-four million, seven hundred thirty-nine thousand, four hundred eight".