1165217356547 has 2 divisors, whose sum is σ = 1165217356548. Its totient is φ = 1165217356546.

The previous prime is 1165217356481. The next prime is 1165217356637. The reversal of 1165217356547 is 7456537125611.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1165217356547 - 2⁸ = 1165217356291 is a prime.

It is not a weakly prime, because it can be changed into another prime (1165217356747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 582608678273 + 582608678274.

It is an arithmetic number, because the mean of its divisors is an integer number (582608678274).

Almost surely, 2^{1165217356547} is an apocalyptic number.

1165217356547 is a deficient number, since it is larger than the sum of its proper divisors (1).

1165217356547 is an equidigital number, since it uses as much as digits as its factorization.

1165217356547 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5292000, while the sum is 53.

The spelling of 1165217356547 in words is "one trillion, one hundred sixty-five billion, two hundred seventeen million, three hundred fifty-six thousand, five hundred forty-seven".