16282421775 has 36 divisors (see below), whose sum is σ = 29373493240. Its totient is φ = 8621467200.

The previous prime is 16282421737. The next prime is 16282421777. The reversal of 16282421775 is 57712428261.

16282421775 is a `hidden beast` number, since 1 + 628 + 2 + 4 + 2 + 17 + 7 + 5 = 666.

It is not a de Polignac number, because 16282421775 - 2⁹ = 16282421263 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 16282421775.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16282421777) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 229036 + ... + 291585.

Almost surely, 2^16282421775 is an apocalyptic number.

16282421775 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

16282421775 is a deficient number, since it is larger than the sum of its proper divisors (13091071465).

16282421775 is a wasteful number, since it uses less digits than its factorization.

16282421775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520776 (or 520768 counting only the distinct ones).

The product of its digits is 376320, while the sum is 45.

The spelling of 16282421775 in words is "sixteen billion, two hundred eighty-two million, four hundred twenty-one thousand, seven hundred seventy-five".