165196149453 has 12 divisors (see below), whose sum is σ = 238656316860. Its totient is φ = 110112463296.

The previous prime is 165196149449. The next prime is 165196149487. The reversal of 165196149453 is 354941691561.

165196149453 is a `hidden beast` number, since 1 + 6 + 5 + 19 + 614 + 9 + 4 + 5 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 119120239044 + 46075910409 = 345138^2 + 214653^2 .

It is not a de Polignac number, because 165196149453 - 2² = 165196149449 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 165196149453.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165196149403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1467976 + ... + 1576497.

It is an arithmetic number, because the mean of its divisors is an integer number (19888026405).

Almost surely, 2^165196149453 is an apocalyptic number.

It is an amenable number.

165196149453 is a deficient number, since it is larger than the sum of its proper divisors (73460167407).

165196149453 is a wasteful number, since it uses less digits than its factorization.

165196149453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3050508 (or 3050505 counting only the distinct ones).

The product of its digits is 3499200, while the sum is 54.

The spelling of 165196149453 in words is "one hundred sixty-five billion, one hundred ninety-six million, one hundred forty-nine thousand, four hundred fifty-three".