165190622473 has 4 divisors (see below), whose sum is σ = 166046532628. Its totient is φ = 164334712320.

The previous prime is 165190622459. The next prime is 165190622489. The reversal of 165190622473 is 374226091561.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 374226091561 = 7 ⋅53460870223.

It can be written as a sum of positive squares in 2 ways, for example, as 98666348544 + 66524273929 = 314112^2 + 257923^2 .

It is a cyclic number.

It is not a de Polignac number, because 165190622473 - 2²¹ = 165188525321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165190622413) 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, 427954788 + ... + 427955173.

It is an arithmetic number, because the mean of its divisors is an integer number (41511633157).

Almost surely, 2^165190622473 is an apocalyptic number.

It is an amenable number.

165190622473 is a deficient number, since it is larger than the sum of its proper divisors (855910155).

165190622473 is an equidigital number, since it uses as much as digits as its factorization.

165190622473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 855910154.

The product of its (nonzero) digits is 544320, while the sum is 46.

The spelling of 165190622473 in words is "one hundred sixty-five billion, one hundred ninety million, six hundred twenty-two thousand, four hundred seventy-three".