16216256272005 has 24 divisors (see below), whose sum is σ = 29761599747672. Its totient is φ = 8139924716544.

The previous prime is 16216256272003. The next prime is 16216256272031. The reversal of 16216256272005 is 50027265261261.

16216256272005 is a `hidden beast` number, since 1 + 6 + 2 + 1 + 62 + 562 + 7 + 20 + 0 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 8596354258116 + 7619902013889 = 2931954^2 + 2760417^2 .

It is not a de Polignac number, because 16216256272005 - 2¹ = 16216256272003 is a prime.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16216256272003) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10598859544 + ... + 10598861073.

It is an arithmetic number, because the mean of its divisors is an integer number (1240066656153).

Almost surely, 2^{16216256272005} is an apocalyptic number.

16216256272005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16216256272005 is a deficient number, since it is larger than the sum of its proper divisors (13545343475667).

16216256272005 is a wasteful number, since it uses less digits than its factorization.

16216256272005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21197720645 (or 21197720642 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 45.

The spelling of 16216256272005 in words is "sixteen trillion, two hundred sixteen billion, two hundred fifty-six million, two hundred seventy-two thousand, five".