161782238767 has 2 divisors, whose sum is σ = 161782238768. Its totient is φ = 161782238766.

The previous prime is 161782238759. The next prime is 161782238791. The reversal of 161782238767 is 767832287161.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 161782238767 - 2³ = 161782238759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161782238867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80891119383 + 80891119384.

It is an arithmetic number, because the mean of its divisors is an integer number (80891119384).

Almost surely, 2^161782238767 is an apocalyptic number.

161782238767 is a deficient number, since it is larger than the sum of its proper divisors (1).

161782238767 is an equidigital number, since it uses as much as digits as its factorization.

161782238767 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9483264, while the sum is 58.

The spelling of 161782238767 in words is "one hundred sixty-one billion, seven hundred eighty-two million, two hundred thirty-eight thousand, seven hundred sixty-seven".