68609637658 has 8 divisors (see below), whose sum is σ = 106234277760. Its totient is φ = 33198211740.

The previous prime is 68609637619. The next prime is 68609637671. The reversal of 68609637658 is 85673690686.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 68609637658.

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, 553303468 + ... + 553303591.

It is an arithmetic number, because the mean of its divisors is an integer number (13279284720).

Almost surely, 2^68609637658 is an apocalyptic number.

68609637658 is a deficient number, since it is larger than the sum of its proper divisors (37624640102).

68609637658 is a wasteful number, since it uses less digits than its factorization.

68609637658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1106607092.

The product of its (nonzero) digits is 78382080, while the sum is 64.

The spelling of 68609637658 in words is "sixty-eight billion, six hundred nine million, six hundred thirty-seven thousand, six hundred fifty-eight".