162143211761 has 4 divisors (see below), whose sum is σ = 162745974900. Its totient is φ = 161540448624.

The previous prime is 162143211707. The next prime is 162143211767. The reversal of 162143211761 is 167112341261.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 167112341261 = 257 ⋅650242573.

It can be written as a sum of positive squares in 2 ways, for example, as 77320144225 + 84823067536 = 278065^2 + 291244^2 .

It is a cyclic number.

It is not a de Polignac number, because 162143211761 - 2¹⁴ = 162143195377 is a prime.

It is a super-2 number, since 2×162143211761² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (162143211767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 301381166 + ... + 301381703.

It is an arithmetic number, because the mean of its divisors is an integer number (40686493725).

Almost surely, 2^162143211761 is an apocalyptic number.

It is an amenable number.

162143211761 is a deficient number, since it is larger than the sum of its proper divisors (602763139).

162143211761 is an equidigital number, since it uses as much as digits as its factorization.

162143211761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 602763138.

The product of its digits is 12096, while the sum is 35.

The spelling of 162143211761 in words is "one hundred sixty-two billion, one hundred forty-three million, two hundred eleven thousand, seven hundred sixty-one".