68671274921 has 8 divisors (see below), whose sum is σ = 69520975680. Its totient is φ = 67825093392.

The previous prime is 68671274909. The next prime is 68671274933. The reversal of 68671274921 is 12947217686.

It is an interprime number because it is at equal distance from previous prime (68671274909) and next prime (68671274933).

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

It is a cyclic number.

It is not a de Polignac number, because 68671274921 - 2¹⁸ = 68671012777 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (68671274941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 840530 + ... + 918603.

It is an arithmetic number, because the mean of its divisors is an integer number (8690121960).

Almost surely, 2^68671274921 is an apocalyptic number.

It is an amenable number.

68671274921 is a deficient number, since it is larger than the sum of its proper divisors (849700759).

68671274921 is a wasteful number, since it uses less digits than its factorization.

68671274921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1759615.

The product of its digits is 2032128, while the sum is 53.

The spelling of 68671274921 in words is "sixty-eight billion, six hundred seventy-one million, two hundred seventy-four thousand, nine hundred twenty-one".