16020005450 has 12 divisors (see below), whose sum is σ = 29797210230. Its totient is φ = 6408002160.

The previous prime is 16020005431. The next prime is 16020005459. The reversal of 16020005450 is 5450002061.

It can be written as a sum of positive squares in 3 ways, for example, as 8353777201 + 7666228249 = 91399^2 + 87557^2 .

It is not an unprimeable number, because it can be changed into a prime (16020005459) 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, 160200005 + ... + 160200104.

Almost surely, 2^16020005450 is an apocalyptic number.

16020005450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16020005450 is a deficient number, since it is larger than the sum of its proper divisors (13777204780).

16020005450 is a wasteful number, since it uses less digits than its factorization.

16020005450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320400121 (or 320400116 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The spelling of 16020005450 in words is "sixteen billion, twenty million, five thousand, four hundred fifty".