68651873210 has 8 divisors (see below), whose sum is σ = 123573371796. Its totient is φ = 27460749280.

The previous prime is 68651873209. The next prime is 68651873263. The reversal of 68651873210 is 1237815686.

It can be written as a sum of positive squares in 2 ways, for example, as 68601562561 + 50310649 = 261919^2 + 7093^2 .

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

It is a Curzon 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, 3432593651 + ... + 3432593670.

Almost surely, 2^68651873210 is an apocalyptic number.

68651873210 is a deficient number, since it is larger than the sum of its proper divisors (54921498586).

68651873210 is a wasteful number, since it uses less digits than its factorization.

68651873210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6865187328.

The product of its (nonzero) digits is 483840, while the sum is 47.

The spelling of 68651873210 in words is "sixty-eight billion, six hundred fifty-one million, eight hundred seventy-three thousand, two hundred ten".