165610004553 has 48 divisors (see below), whose sum is σ = 281175631360. Its totient is φ = 91945819008.

The previous prime is 165610004543. The next prime is 165610004561. The reversal of 165610004553 is 355400016561.

165610004553 is a `hidden beast` number, since 1 + 6 + 561 + 0 + 0 + 0 + 45 + 53 = 666.

It is not a de Polignac number, because 165610004553 - 2⁸ = 165610004297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165610004503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1602576 + ... + 1702782.

Almost surely, 2^165610004553 is an apocalyptic number.

It is an amenable number.

165610004553 is a deficient number, since it is larger than the sum of its proper divisors (115565626807).

165610004553 is a wasteful number, since it uses less digits than its factorization.

165610004553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100966 (or 100963 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

The spelling of 165610004553 in words is "one hundred sixty-five billion, six hundred ten million, four thousand, five hundred fifty-three".