165262504426 has 4 divisors (see below), whose sum is σ = 247893756642. Its totient is φ = 82631252212.

The previous prime is 165262504411. The next prime is 165262504439. The reversal of 165262504426 is 624405262561.

It is a happy number.

165262504426 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 624405262561 = 5693 ⋅109679477.

It can be written as a sum of positive squares in only one way, i.e., 164348349201 + 914155225 = 405399^2 + 30235^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41315626105 + ... + 41315626108.

Almost surely, 2^165262504426 is an apocalyptic number.

165262504426 is a deficient number, since it is larger than the sum of its proper divisors (82631252216).

165262504426 is an equidigital number, since it uses as much as digits as its factorization.

165262504426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82631252215.

The product of its (nonzero) digits is 691200, while the sum is 43.

Adding to 165262504426 its reverse (624405262561), we get a palindrome (789667766987).

The spelling of 165262504426 in words is "one hundred sixty-five billion, two hundred sixty-two million, five hundred four thousand, four hundred twenty-six".