16434165421660 has 24 divisors (see below), whose sum is σ = 39441997012320. Its totient is φ = 5634571001664.

The previous prime is 16434165421631. The next prime is 16434165421691. The reversal of 16434165421660 is 6612456143461.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58693447795 + ... + 58693448074.

It is an arithmetic number, because the mean of its divisors is an integer number (1643416542180).

Almost surely, 2^{16434165421660} is an apocalyptic number.

16434165421660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16434165421660 is an abundant number, since it is smaller than the sum of its proper divisors (23007831590660).

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

16434165421660 is a wasteful number, since it uses less digits than its factorization.

16434165421660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117386895885 (or 117386895883 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 49.

The spelling of 16434165421660 in words is "sixteen trillion, four hundred thirty-four billion, one hundred sixty-five million, four hundred twenty-one thousand, six hundred sixty".