16443345258 has 12 divisors (see below), whose sum is σ = 35627248098. Its totient is φ = 5481115080.

The previous prime is 16443345227. The next prime is 16443345263. The reversal of 16443345258 is 85254334461.

16443345258 is a `hidden beast` number, since 1 + 64 + 4 + 334 + 5 + 258 = 666.

It can be written as a sum of positive squares in only one way, i.e., 13549658409 + 2893686849 = 116403^2 + 53793^2 .

It is a super-3 number, since 3×16443345258³ (a number of 32 digits) contains 333 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 456759573 + ... + 456759608.

Almost surely, 2^16443345258 is an apocalyptic number.

16443345258 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

16443345258 is an abundant number, since it is smaller than the sum of its proper divisors (19183902840).

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

16443345258 is a wasteful number, since it uses less digits than its factorization.

16443345258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 913519189 (or 913519186 counting only the distinct ones).

The product of its digits is 1382400, while the sum is 45.

The spelling of 16443345258 in words is "sixteen billion, four hundred forty-three million, three hundred forty-five thousand, two hundred fifty-eight".