161440645463053 has 16 divisors (see below), whose sum is σ = 177085162932480. Its totient is φ = 145958100926400.

The previous prime is 161440645463011. The next prime is 161440645463077. The reversal of 161440645463053 is 350364546044161.

It is a cyclic number.

It is not a de Polignac number, because 161440645463053 - 2²⁵ = 161440611908621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161440645463653) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10415253 + ... + 20769178.

It is an arithmetic number, because the mean of its divisors is an integer number (11067822683280).

Almost surely, 2^{161440645463053} is an apocalyptic number.

It is an amenable number.

161440645463053 is a deficient number, since it is larger than the sum of its proper divisors (15644517469427).

161440645463053 is a wasteful number, since it uses less digits than its factorization.

161440645463053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31187028.

The product of its (nonzero) digits is 12441600, while the sum is 52.

The spelling of 161440645463053 in words is "one hundred sixty-one trillion, four hundred forty billion, six hundred forty-five million, four hundred sixty-three thousand, fifty-three".