16458205872 has 30 divisors (see below), whose sum is σ = 42519328068. Its totient is φ = 5485772352.

The previous prime is 16458205853. The next prime is 16458205879. The reversal of 16458205872 is 27850285461.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (16458205879) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 879558 + ... + 898074.

Almost surely, 2^16458205872 is an apocalyptic number.

16458205872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16458205872 is an abundant number, since it is smaller than the sum of its proper divisors (26061122196).

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

16458205872 is an frugal number, since it uses more digits than its factorization.

16458205872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37045 (or 18522 counting only the distinct ones).

The product of its (nonzero) digits is 1075200, while the sum is 48.

Multiplying 16458205872 by its sum of digits (48), we get a square (789993881856 = 888816²).

16458205872 divided by its sum of digits (48) gives a square (342879289 = 18517²).

The spelling of 16458205872 in words is "sixteen billion, four hundred fifty-eight million, two hundred five thousand, eight hundred seventy-two".