162663780805 has 16 divisors (see below), whose sum is σ = 197265624624. Its totient is φ = 128755630080.

The previous prime is 162663780803. The next prime is 162663780817. The reversal of 162663780805 is 508087366261.

162663780805 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 12801112164 + 149862668641 = 113142^2 + 387121^2 .

It is not a de Polignac number, because 162663780805 - 2¹ = 162663780803 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (162663780803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76525 + ... + 575485.

It is an arithmetic number, because the mean of its divisors is an integer number (12329101539).

Almost surely, 2^162663780805 is an apocalyptic number.

It is an amenable number.

162663780805 is a deficient number, since it is larger than the sum of its proper divisors (34601843819).

162663780805 is a wasteful number, since it uses less digits than its factorization.

162663780805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499656.

The product of its (nonzero) digits is 2903040, while the sum is 52.

The spelling of 162663780805 in words is "one hundred sixty-two billion, six hundred sixty-three million, seven hundred eighty thousand, eight hundred five".