21702436083 has 16 divisors (see below), whose sum is σ = 32155084800. Its totient is φ = 14466793320.

The previous prime is 21702436057. The next prime is 21702436121. The reversal of 21702436083 is 38063420712.

It is a happy number.

21702436083 is a `hidden beast` number, since 2 + 1 + 7 + 0 + 2 + 43 + 608 + 3 = 666.

It is not a de Polignac number, because 21702436083 - 2²⁵ = 21668881651 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21702436033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 265278 + ... + 337308.

It is an arithmetic number, because the mean of its divisors is an integer number (2009692800).

Almost surely, 2^21702436083 is an apocalyptic number.

21702436083 is a deficient number, since it is larger than the sum of its proper divisors (10452648717).

21702436083 is a wasteful number, since it uses less digits than its factorization.

21702436083 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83199 (or 83193 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

Adding to 21702436083 its reverse (38063420712), we get a palindrome (59765856795).

The spelling of 21702436083 in words is "twenty-one billion, seven hundred two million, four hundred thirty-six thousand, eighty-three".