162128383997 has 4 divisors (see below), whose sum is σ = 163065542460. Its totient is φ = 161191225536.

The previous prime is 162128383981. The next prime is 162128384051. The reversal of 162128383997 is 799383821261.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 799383821261 = 149 ⋅5364992089.

It can be written as a sum of positive squares in 2 ways, for example, as 142601395876 + 19526988121 = 377626^2 + 139739^2 .

It is a cyclic number.

It is not a de Polignac number, because 162128383997 - 2⁴ = 162128383981 is a prime.

It is a super-2 number, since 2×162128383997² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (162128383927) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 468578972 + ... + 468579317.

It is an arithmetic number, because the mean of its divisors is an integer number (40766385615).

Almost surely, 2^162128383997 is an apocalyptic number.

It is an amenable number.

162128383997 is a deficient number, since it is larger than the sum of its proper divisors (937158463).

162128383997 is an equidigital number, since it uses as much as digits as its factorization.

162128383997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 937158462.

The product of its digits is 7838208, while the sum is 59.

The spelling of 162128383997 in words is "one hundred sixty-two billion, one hundred twenty-eight million, three hundred eighty-three thousand, nine hundred ninety-seven".