21356211475313 has 8 divisors (see below), whose sum is σ = 25089814880256. Its totient is φ = 17921296342800.

The previous prime is 21356211475309. The next prime is 21356211475337. The reversal of 21356211475313 is 31357411265312.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21356211475313 - 2² = 21356211475309 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (21356211475373) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74672067953 + ... + 74672068238.

It is an arithmetic number, because the mean of its divisors is an integer number (3136226860032).

Almost surely, 2^{21356211475313} is an apocalyptic number.

It is an amenable number.

21356211475313 is a deficient number, since it is larger than the sum of its proper divisors (3733603404943).

21356211475313 is a wasteful number, since it uses less digits than its factorization.

21356211475313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149344136215.

The product of its digits is 453600, while the sum is 44.

The spelling of 21356211475313 in words is "twenty-one trillion, three hundred fifty-six billion, two hundred eleven million, four hundred seventy-five thousand, three hundred thirteen".