21016586738303 has 16 divisors (see below), whose sum is σ = 23415386400000. Its totient is φ = 18732308797440.

The previous prime is 21016586738297. The next prime is 21016586738333. The reversal of 21016586738303 is 30383768561012.

It is a cyclic number.

It is not a de Polignac number, because 21016586738303 - 2²⁶ = 21016519629439 is a prime.

It is a super-2 number, since 2×21016586738303² (a number of 27 digits) contains 22 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 (21016586738333) 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, 57892928 + ... + 58254821.

It is an arithmetic number, because the mean of its divisors is an integer number (1463461650000).

Almost surely, 2^{21016586738303} is an apocalyptic number.

21016586738303 is a deficient number, since it is larger than the sum of its proper divisors (2398799661697).

21016586738303 is a wasteful number, since it uses less digits than its factorization.

21016586738303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116148242.

The product of its (nonzero) digits is 4354560, while the sum is 53.

The spelling of 21016586738303 in words is "twenty-one trillion, sixteen billion, five hundred eighty-six million, seven hundred thirty-eight thousand, three hundred three".