163143423335420 has 96 divisors (see below), whose sum is σ = 374478718332096. Its totient is φ = 59208754176000.

The previous prime is 163143423335411. The next prime is 163143423335461. The reversal of 163143423335420 is 24533324341361.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

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, 453731552 + ... + 454090968.

It is an arithmetic number, because the mean of its divisors is an integer number (3900819982626).

Almost surely, 2^{163143423335420} is an apocalyptic number.

163143423335420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

163143423335420 is an abundant number, since it is smaller than the sum of its proper divisors (211335294996676).

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

163143423335420 is a wasteful number, since it uses less digits than its factorization.

163143423335420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363471 (or 363469 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 44.

Adding to 163143423335420 its reverse (24533324341361), we get a palindrome (187676747676781).

The spelling of 163143423335420 in words is "one hundred sixty-three trillion, one hundred forty-three billion, four hundred twenty-three million, three hundred thirty-five thousand, four hundred twenty".