161255344463 has 2 divisors, whose sum is σ = 161255344464. Its totient is φ = 161255344462.

The previous prime is 161255344417. The next prime is 161255344487. The reversal of 161255344463 is 364443552161.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 161255344463 - 2⁶ = 161255344399 is a prime.

It is a super-2 number, since 2×161255344463² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161255344363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80627672231 + 80627672232.

It is an arithmetic number, because the mean of its divisors is an integer number (80627672232).

Almost surely, 2^161255344463 is an apocalyptic number.

161255344463 is a deficient number, since it is larger than the sum of its proper divisors (1).

161255344463 is an equidigital number, since it uses as much as digits as its factorization.

161255344463 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1036800, while the sum is 44.

The spelling of 161255344463 in words is "one hundred sixty-one billion, two hundred fifty-five million, three hundred forty-four thousand, four hundred sixty-three".