163550441512421 has 32 divisors (see below), whose sum is σ = 175361755726080. Its totient is φ = 151992453805056.

The previous prime is 163550441512309. The next prime is 163550441512483. The reversal of 163550441512421 is 124215144055361.

It is not a de Polignac number, because 163550441512421 - 2⁴² = 159152395001317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163550441518421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3434250416 + ... + 3434298038.

It is an arithmetic number, because the mean of its divisors is an integer number (5480054866440).

Almost surely, 2^{163550441512421} is an apocalyptic number.

It is an amenable number.

163550441512421 is a deficient number, since it is larger than the sum of its proper divisors (11811314213659).

163550441512421 is a wasteful number, since it uses less digits than its factorization.

163550441512421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54093.

The product of its (nonzero) digits is 576000, while the sum is 44.

Adding to 163550441512421 its reverse (124215144055361), we get a palindrome (287765585567782).

The spelling of 163550441512421 in words is "one hundred sixty-three trillion, five hundred fifty billion, four hundred forty-one million, five hundred twelve thousand, four hundred twenty-one".