163817492342120 has 32 divisors (see below), whose sum is σ = 381299335626600. Its totient is φ = 63267445317888.

The previous prime is 163817492342083. The next prime is 163817492342123. The reversal of 163817492342120 is 21243294718361.

It can be written as a sum of positive squares in 4 ways, for example, as 115793396218756 + 48024096123364 = 10760734^2 + 6929942^2 .

It is not an unprimeable number, because it can be changed into a prime (163817492342123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70610986919 + ... + 70610989238.

Almost surely, 2^{163817492342120} is an apocalyptic number.

163817492342120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

163817492342120 is an abundant number, since it is smaller than the sum of its proper divisors (217481843284480).

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

163817492342120 is a wasteful number, since it uses less digits than its factorization.

163817492342120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141221976197 (or 141221976193 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 53.

The spelling of 163817492342120 in words is "one hundred sixty-three trillion, eight hundred seventeen billion, four hundred ninety-two million, three hundred forty-two thousand, one hundred twenty".