21356150057317 has 8 divisors (see below), whose sum is σ = 21361160994624. Its totient is φ = 21351139712448.

The previous prime is 21356150057167. The next prime is 21356150057381. The reversal of 21356150057317 is 71375005165312.

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 21356150057317 - 2²⁷ = 21356015839589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21356150057387) 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, 76542688 + ... + 76821190.

It is an arithmetic number, because the mean of its divisors is an integer number (2670145124328).

Almost surely, 2^{21356150057317} is an apocalyptic number.

It is an amenable number.

21356150057317 is a deficient number, since it is larger than the sum of its proper divisors (5010937307).

21356150057317 is a wasteful number, since it uses less digits than its factorization.

21356150057317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296219.

The product of its (nonzero) digits is 661500, while the sum is 46.

The spelling of 21356150057317 in words is "twenty-one trillion, three hundred fifty-six billion, one hundred fifty million, fifty-seven thousand, three hundred seventeen".