163043197920 has 96 divisors (see below), whose sum is σ = 570651207840. Its totient is φ = 43478184960.

The previous prime is 163043197903. The next prime is 163043197927. The reversal of 163043197920 is 29791340361.

163043197920 is a `hidden beast` number, since 1 + 6 + 304 + 319 + 7 + 9 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163043197927) 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, 18866421 + ... + 18875060.

It is an arithmetic number, because the mean of its divisors is an integer number (5944283415).

Almost surely, 2^163043197920 is an apocalyptic number.

163043197920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

163043197920 is an abundant number, since it is smaller than the sum of its proper divisors (407608009920).

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

163043197920 is a wasteful number, since it uses less digits than its factorization.

163043197920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37741505 (or 37741491 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 45.

The spelling of 163043197920 in words is "one hundred sixty-three billion, forty-three million, one hundred ninety-seven thousand, nine hundred twenty".