163453224135545 has 16 divisors (see below), whose sum is σ = 207833005040400. Its totient is φ = 122981026473984.

The previous prime is 163453224135533. The next prime is 163453224135577. The reversal of 163453224135545 is 545531422354361.

It can be written as a sum of positive squares in 8 ways, for example, as 53151915167296 + 110301308968249 = 7290536^2 + 10502443^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-163453224135545 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 700167020 + ... + 700400429.

It is an arithmetic number, because the mean of its divisors is an integer number (12989562815025).

Almost surely, 2^{163453224135545} is an apocalyptic number.

It is an amenable number.

163453224135545 is a deficient number, since it is larger than the sum of its proper divisors (44379780904855).

163453224135545 is a wasteful number, since it uses less digits than its factorization.

163453224135545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1400568844.

The product of its digits is 25920000, while the sum is 53.

The spelling of 163453224135545 in words is "one hundred sixty-three trillion, four hundred fifty-three billion, two hundred twenty-four million, one hundred thirty-five thousand, five hundred forty-five".