161465135644653 has 16 divisors (see below), whose sum is σ = 217471443960000. Its totient is φ = 106551645580800.

The previous prime is 161465135644607. The next prime is 161465135644669. The reversal of 161465135644653 is 356446531564161.

It is not a de Polignac number, because 161465135644653 - 2¹⁶ = 161465135579117 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161465135644693) 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, 63760228 + ... + 66244221.

It is an arithmetic number, because the mean of its divisors is an integer number (13591965247500).

Almost surely, 2^{161465135644653} is an apocalyptic number.

It is an amenable number.

161465135644653 is a deficient number, since it is larger than the sum of its proper divisors (56006308315347).

161465135644653 is a wasteful number, since it uses less digits than its factorization.

161465135644653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130008652.

The product of its digits is 93312000, while the sum is 60.

The spelling of 161465135644653 in words is "one hundred sixty-one trillion, four hundred sixty-five billion, one hundred thirty-five million, six hundred forty-four thousand, six hundred fifty-three".