216521053300563 has 64 divisors (see below), whose sum is σ = 317765238915072. Its totient is φ = 130049900023680.

The previous prime is 216521053300537. The next prime is 216521053300571. The reversal of 216521053300563 is 365003350125612.

It is not a de Polignac number, because 216521053300563 - 2¹³ = 216521053292371 is a prime.

It is a super-2 number, since 2×216521053300563² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (216521053340563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 29526936645 + ... + 29526943977.

It is an arithmetic number, because the mean of its divisors is an integer number (4965081858048).

Almost surely, 2^{216521053300563} is an apocalyptic number.

216521053300563 is a deficient number, since it is larger than the sum of its proper divisors (101244185614509).

216521053300563 is a wasteful number, since it uses less digits than its factorization.

216521053300563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14184.

The product of its (nonzero) digits is 486000, while the sum is 42.

The spelling of 216521053300563 in words is "two hundred sixteen trillion, five hundred twenty-one billion, fifty-three million, three hundred thousand, five hundred sixty-three".