68272808357 has 8 divisors (see below), whose sum is σ = 77394276960. Its totient is φ = 59704156080.

The previous prime is 68272808341. The next prime is 68272808377. The reversal of 68272808357 is 75380827286.

It is a happy number.

68272808357 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 68272808357 - 2⁴ = 68272808341 is a prime.

It is a super-2 number, since 2×68272808357² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68272808377) 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, 138203819 + ... + 138204312.

It is an arithmetic number, because the mean of its divisors is an integer number (9674284620).

Almost surely, 2^68272808357 is an apocalyptic number.

It is an amenable number.

68272808357 is a deficient number, since it is larger than the sum of its proper divisors (9121468603).

68272808357 is a wasteful number, since it uses less digits than its factorization.

68272808357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276408163.

The product of its (nonzero) digits is 9031680, while the sum is 56.

The spelling of 68272808357 in words is "sixty-eight billion, two hundred seventy-two million, eight hundred eight thousand, three hundred fifty-seven".