21082536319 has 16 divisors (see below), whose sum is σ = 23494212000. Its totient is φ = 18784112256.

The previous prime is 21082536317. The next prime is 21082536331. The reversal of 21082536319 is 91363528012.

It is not a de Polignac number, because 21082536319 - 2¹ = 21082536317 is a prime.

It is a super-2 number, since 2×21082536319² (a number of 21 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 (21082536317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1729257 + ... + 1741405.

It is an arithmetic number, because the mean of its divisors is an integer number (1468388250).

Almost surely, 2^21082536319 is an apocalyptic number.

21082536319 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

21082536319 is a deficient number, since it is larger than the sum of its proper divisors (2411675681).

21082536319 is a wasteful number, since it uses less digits than its factorization.

21082536319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16794.

The product of its (nonzero) digits is 77760, while the sum is 40.

The spelling of 21082536319 in words is "twenty-one billion, eighty-two million, five hundred thirty-six thousand, three hundred nineteen".