21802083337 has 4 divisors (see below), whose sum is σ = 21834479380. Its totient is φ = 21769687296.

The previous prime is 21802083301. The next prime is 21802083367. The reversal of 21802083337 is 73338020812.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16477316496 + 5324766841 = 128364^2 + 72971^2 .

It is a cyclic number.

It is not a de Polignac number, because 21802083337 - 2¹⁹ = 21801559049 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21802083296 and 21802083305.

It is not an unprimeable number, because it can be changed into a prime (21802083367) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16197012 + ... + 16198357.

It is an arithmetic number, because the mean of its divisors is an integer number (5458619845).

Almost surely, 2^21802083337 is an apocalyptic number.

It is an amenable number.

21802083337 is a deficient number, since it is larger than the sum of its proper divisors (32396043).

21802083337 is an equidigital number, since it uses as much as digits as its factorization.

21802083337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32396042.

The product of its (nonzero) digits is 48384, while the sum is 37.

The spelling of 21802083337 in words is "twenty-one billion, eight hundred two million, eighty-three thousand, three hundred thirty-seven".