54356111516569 has 2 divisors, whose sum is σ = 54356111516570. Its totient is φ = 54356111516568.

The previous prime is 54356111516543. The next prime is 54356111516701. The reversal of 54356111516569 is 96561511165345.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40977985974025 + 13378125542544 = 6401405^2 + 3657612^2 .

It is a cyclic number.

It is not a de Polignac number, because 54356111516569 - 2⁵ = 54356111516537 is a prime.

It is a super-2 number, since 2×54356111516569² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (54356111516269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27178055758284 + 27178055758285.

It is an arithmetic number, because the mean of its divisors is an integer number (27178055758285).

Almost surely, 2^{54356111516569} is an apocalyptic number.

It is an amenable number.

54356111516569 is a deficient number, since it is larger than the sum of its proper divisors (1).

54356111516569 is an equidigital number, since it uses as much as digits as its factorization.

54356111516569 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14580000, while the sum is 58.

The spelling of 54356111516569 in words is "fifty-four trillion, three hundred fifty-six billion, one hundred eleven million, five hundred sixteen thousand, five hundred sixty-nine".