21163132056313 has 32 divisors (see below), whose sum is σ = 23805778645152. Its totient is φ = 18684726528000.

The previous prime is 21163132056233. The next prime is 21163132056317. The reversal of 21163132056313 is 31365023136112.

It can be written as a sum of positive squares in 16 ways, for example, as 13401068598009 + 7762063458304 = 3660747^2 + 2786048^2 .

It is not a de Polignac number, because 21163132056313 - 2¹⁷ = 21163131925241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21163132056317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36464031 + ... + 37039867.

It is an arithmetic number, because the mean of its divisors is an integer number (743930582661).

Almost surely, 2^{21163132056313} is an apocalyptic number.

It is an amenable number.

21163132056313 is a deficient number, since it is larger than the sum of its proper divisors (2642646588839).

21163132056313 is a wasteful number, since it uses less digits than its factorization.

21163132056313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 577245.

The product of its (nonzero) digits is 58320, while the sum is 37.

The spelling of 21163132056313 in words is "twenty-one trillion, one hundred sixty-three billion, one hundred thirty-two million, fifty-six thousand, three hundred thirteen".