68557144430153 has 2 divisors, whose sum is σ = 68557144430154. Its totient is φ = 68557144430152.

The previous prime is 68557144430147. The next prime is 68557144430233. The reversal of 68557144430153 is 35103444175586.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64000512001024 + 4556632429129 = 8000032^2 + 2134627^2 .

It is a cyclic number.

It is not a de Polignac number, because 68557144430153 - 2¹⁰ = 68557144429129 is a prime.

It is a super-3 number, since 3×68557144430153³ (a number of 42 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (68557144430113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34278572215076 + 34278572215077.

It is an arithmetic number, because the mean of its divisors is an integer number (34278572215077).

Almost surely, 2^{68557144430153} is an apocalyptic number.

It is an amenable number.

68557144430153 is a deficient number, since it is larger than the sum of its proper divisors (1).

68557144430153 is an equidigital number, since it uses as much as digits as its factorization.

68557144430153 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192000, while the sum is 56.

The spelling of 68557144430153 in words is "sixty-eight trillion, five hundred fifty-seven billion, one hundred forty-four million, four hundred thirty thousand, one hundred fifty-three".