16204509851 has 8 divisors (see below), whose sum is σ = 16521453120. Its totient is φ = 15890133312.

The previous prime is 16204509833. The next prime is 16204509859. The reversal of 16204509851 is 15890540261.

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

It is a cyclic number.

It is not a de Polignac number, because 16204509851 - 2⁶ = 16204509787 is a prime.

It is a super-3 number, since 3×16204509851³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16204509799 and 16204509808.

It is not an unprimeable number, because it can be changed into a prime (16204509859) 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, 628931 + ... + 654188.

It is an arithmetic number, because the mean of its divisors is an integer number (2065181640).

Almost surely, 2^16204509851 is an apocalyptic number.

16204509851 is a deficient number, since it is larger than the sum of its proper divisors (316943269).

16204509851 is a wasteful number, since it uses less digits than its factorization.

16204509851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1283365.

The product of its (nonzero) digits is 86400, while the sum is 41.

The spelling of 16204509851 in words is "sixteen billion, two hundred four million, five hundred nine thousand, eight hundred fifty-one".