16819848521 has 8 divisors (see below), whose sum is σ = 19392797184. Its totient is φ = 14289428160.

The previous prime is 16819848517. The next prime is 16819848527. The reversal of 16819848521 is 12584891861.

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

It is not a de Polignac number, because 16819848521 - 2² = 16819848517 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16819848527) 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, 10631225 + ... + 10632806.

It is an arithmetic number, because the mean of its divisors is an integer number (2424099648).

Almost surely, 2^16819848521 is an apocalyptic number.

It is an amenable number.

16819848521 is a deficient number, since it is larger than the sum of its proper divisors (2572948663).

16819848521 is a wasteful number, since it uses less digits than its factorization.

16819848521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21264151.

The product of its digits is 1105920, while the sum is 53.

The spelling of 16819848521 in words is "sixteen billion, eight hundred nineteen million, eight hundred forty-eight thousand, five hundred twenty-one".