163455131315645 has 16 divisors (see below), whose sum is σ = 211274658972720. Its totient is φ = 120682278925824.

The previous prime is 163455131315573. The next prime is 163455131315657. The reversal of 163455131315645 is 546513131554361.

It can be written as a sum of positive squares in 8 ways, for example, as 1909531532164 + 161545599783481 = 1381858^2 + 12710059^2 .

It is a cyclic number.

It is not a de Polignac number, because 163455131315645 - 2⁸ = 163455131315389 is a prime.

It is a congruent number.

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, 239748800 + ... + 240429609.

It is an arithmetic number, because the mean of its divisors is an integer number (13204666185795).

Almost surely, 2^{163455131315645} is an apocalyptic number.

It is an amenable number.

163455131315645 is a deficient number, since it is larger than the sum of its proper divisors (47819527657075).

163455131315645 is a wasteful number, since it uses less digits than its factorization.

163455131315645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480183664.

The product of its digits is 9720000, while the sum is 53.

The spelling of 163455131315645 in words is "one hundred sixty-three trillion, four hundred fifty-five billion, one hundred thirty-one million, three hundred fifteen thousand, six hundred forty-five".