161385321283 has 2 divisors, whose sum is σ = 161385321284. Its totient is φ = 161385321282.

The previous prime is 161385321257. The next prime is 161385321319. The reversal of 161385321283 is 382123583161.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 161385321283 - 2³⁷ = 23946367811 is a prime.

It is not a weakly prime, because it can be changed into another prime (161385301283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80692660641 + 80692660642.

It is an arithmetic number, because the mean of its divisors is an integer number (80692660642).

Almost surely, 2^161385321283 is an apocalyptic number.

161385321283 is a deficient number, since it is larger than the sum of its proper divisors (1).

161385321283 is an equidigital number, since it uses as much as digits as its factorization.

161385321283 is an evil number, because the sum of its binary digits is even.

The product of its digits is 207360, while the sum is 43.

The spelling of 161385321283 in words is "one hundred sixty-one billion, three hundred eighty-five million, three hundred twenty-one thousand, two hundred eighty-three".