16021421109674 has 8 divisors (see below), whose sum is σ = 24032191239108. Its totient is φ = 8010690696640.

The previous prime is 16021421109619. The next prime is 16021421109697. The reversal of 16021421109674 is 47690112412061.

It can be written as a sum of positive squares in 2 ways, for example, as 15990745338649 + 30675771025 = 3998843^2 + 175145^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8899247 + ... + 10547010.

Almost surely, 2^{16021421109674} is an apocalyptic number.

16021421109674 is a deficient number, since it is larger than the sum of its proper divisors (8010770129434).

16021421109674 is a wasteful number, since it uses less digits than its factorization.

16021421109674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19858200.

The product of its (nonzero) digits is 145152, while the sum is 44.

The spelling of 16021421109674 in words is "sixteen trillion, twenty-one billion, four hundred twenty-one million, one hundred nine thousand, six hundred seventy-four".