163543221651545 has 32 divisors (see below), whose sum is σ = 204985769679360. Its totient is φ = 125023169779200.

The previous prime is 163543221651503. The next prime is 163543221651611. The reversal of 163543221651545 is 545156122345361.

It is not a de Polignac number, because 163543221651545 - 2³⁸ = 163268343744601 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2193672020 + ... + 2193746570.

It is an arithmetic number, because the mean of its divisors is an integer number (6405805302480).

Almost surely, 2^{163543221651545} is an apocalyptic number.

It is an amenable number.

163543221651545 is a deficient number, since it is larger than the sum of its proper divisors (41442548027815).

163543221651545 is a wasteful number, since it uses less digits than its factorization.

163543221651545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93065.

The product of its digits is 12960000, while the sum is 53.

The spelling of 163543221651545 in words is "one hundred sixty-three trillion, five hundred forty-three billion, two hundred twenty-one million, six hundred fifty-one thousand, five hundred forty-five".