21054162141313 has 4 divisors (see below), whose sum is σ = 24061899590080. Its totient is φ = 18046424692548.

The previous prime is 21054162141301. The next prime is 21054162141329. The reversal of 21054162141313 is 31314126145012.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 21054162141313 - 2³³ = 21045572206721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21054162141413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1503868724373 + ... + 1503868724386.

It is an arithmetic number, because the mean of its divisors is an integer number (6015474897520).

Almost surely, 2^{21054162141313} is an apocalyptic number.

It is an amenable number.

21054162141313 is a deficient number, since it is larger than the sum of its proper divisors (3007737448767).

21054162141313 is an equidigital number, since it uses as much as digits as its factorization.

21054162141313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3007737448766.

The product of its (nonzero) digits is 17280, while the sum is 34.

Adding to 21054162141313 its reverse (31314126145012), we get a palindrome (52368288286325).

The spelling of 21054162141313 in words is "twenty-one trillion, fifty-four billion, one hundred sixty-two million, one hundred forty-one thousand, three hundred thirteen".