68261226321 has 8 divisors (see below), whose sum is σ = 91220421600. Its totient is φ = 45404757632.

The previous prime is 68261226311. The next prime is 68261226329. The reversal of 68261226321 is 12362216286.

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 68261226321 - 2⁵ = 68261226289 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 68261226321.

It is not an unprimeable number, because it can be changed into a prime (68261226329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25680096 + ... + 25682753.

It is an arithmetic number, because the mean of its divisors is an integer number (11402552700).

Almost surely, 2^68261226321 is an apocalyptic number.

It is an amenable number.

68261226321 is a deficient number, since it is larger than the sum of its proper divisors (22959195279).

68261226321 is a wasteful number, since it uses less digits than its factorization.

68261226321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51363295.

The product of its digits is 82944, while the sum is 39.

The spelling of 68261226321 in words is "sixty-eight billion, two hundred sixty-one million, two hundred twenty-six thousand, three hundred twenty-one".