68153668927 has 2 divisors, whose sum is σ = 68153668928. Its totient is φ = 68153668926.

The previous prime is 68153668897. The next prime is 68153668949. The reversal of 68153668927 is 72986635186.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68153668927 is a prime.

It is a super-2 number, since 2×68153668927² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68153668997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34076834463 + 34076834464.

It is an arithmetic number, because the mean of its divisors is an integer number (34076834464).

Almost surely, 2^68153668927 is an apocalyptic number.

68153668927 is a deficient number, since it is larger than the sum of its proper divisors (1).

68153668927 is an equidigital number, since it uses as much as digits as its factorization.

68153668927 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26127360, while the sum is 61.

The spelling of 68153668927 in words is "sixty-eight billion, one hundred fifty-three million, six hundred sixty-eight thousand, nine hundred twenty-seven".