161217711463 has 2 divisors, whose sum is σ = 161217711464. Its totient is φ = 161217711462.

The previous prime is 161217711439. The next prime is 161217711493. The reversal of 161217711463 is 364117712161.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 161217711463 - 2³³ = 152627776871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161217711493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80608855731 + 80608855732.

It is an arithmetic number, because the mean of its divisors is an integer number (80608855732).

Almost surely, 2^161217711463 is an apocalyptic number.

161217711463 is a deficient number, since it is larger than the sum of its proper divisors (1).

161217711463 is an equidigital number, since it uses as much as digits as its factorization.

161217711463 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42336, while the sum is 40.

The spelling of 161217711463 in words is "one hundred sixty-one billion, two hundred seventeen million, seven hundred eleven thousand, four hundred sixty-three".