163895909545536 has 56 divisors (see below), whose sum is σ = 495590012201280. Its totient is φ = 46827402726912.

The previous prime is 163895909545493. The next prime is 163895909545541. The reversal of 163895909545536 is 635545909598361.

It is a tau number, because it is divible by the number of its divisors (56).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60973179291 + ... + 60973181978.

Almost surely, 2^{163895909545536} is an apocalyptic number.

163895909545536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

163895909545536 is an abundant number, since it is smaller than the sum of its proper divisors (331694102655744).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

163895909545536 is a wasteful number, since it uses less digits than its factorization.

163895909545536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121946361291 (or 121946361281 counting only the distinct ones).

The product of its (nonzero) digits is 4723920000, while the sum is 78.

The spelling of 163895909545536 in words is "one hundred sixty-three trillion, eight hundred ninety-five billion, nine hundred nine million, five hundred forty-five thousand, five hundred thirty-six".