16004431051 has 8 divisors (see below), whose sum is σ = 18391833824. Its totient is φ = 13642292160.

The previous prime is 16004431043. The next prime is 16004431081. The reversal of 16004431051 is 15013440061.

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

It is not a de Polignac number, because 16004431051 - 2³ = 16004431043 is a prime.

It is a super-2 number, since 2×16004431051² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16004431031) 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, 6314610 + ... + 6317143.

It is an arithmetic number, because the mean of its divisors is an integer number (2298979228).

Almost surely, 2^16004431051 is an apocalyptic number.

16004431051 is a deficient number, since it is larger than the sum of its proper divisors (2387402773).

16004431051 is a wasteful number, since it uses less digits than its factorization.

16004431051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12631941.

The product of its (nonzero) digits is 1440, while the sum is 25.

The spelling of 16004431051 in words is "sixteen billion, four million, four hundred thirty-one thousand, fifty-one".