21156201350413 has 16 divisors (see below), whose sum is σ = 21910883328000. Its totient is φ = 20403199821312.

The previous prime is 21156201350411. The next prime is 21156201350447. The reversal of 21156201350413 is 31405310265112.

It is not a de Polignac number, because 21156201350413 - 2¹ = 21156201350411 is a prime.

It is a super-3 number, since 3×21156201350413³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21156201350411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 609899956 + ... + 609934642.

It is an arithmetic number, because the mean of its divisors is an integer number (1369430208000).

Almost surely, 2^{21156201350413} is an apocalyptic number.

It is an amenable number.

21156201350413 is a deficient number, since it is larger than the sum of its proper divisors (754681977587).

21156201350413 is a wasteful number, since it uses less digits than its factorization.

21156201350413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58284.

The product of its (nonzero) digits is 21600, while the sum is 34.

The spelling of 21156201350413 in words is "twenty-one trillion, one hundred fifty-six billion, two hundred one million, three hundred fifty thousand, four hundred thirteen".