21075161326 has 16 divisors (see below), whose sum is σ = 33404774400. Its totient is φ = 9951835608.

The previous prime is 21075161321. The next prime is 21075161339. The reversal of 21075161326 is 62316157012.

It is a junction number, because it is equal to n+sod(n) for n = 21075161291 and 21075161300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21075161321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2896086 + ... + 2903353.

It is an arithmetic number, because the mean of its divisors is an integer number (2087798400).

Almost surely, 2^21075161326 is an apocalyptic number.

21075161326 is a deficient number, since it is larger than the sum of its proper divisors (12329613074).

21075161326 is a wasteful number, since it uses less digits than its factorization.

21075161326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5799543.

The product of its (nonzero) digits is 15120, while the sum is 34.

The spelling of 21075161326 in words is "twenty-one billion, seventy-five million, one hundred sixty-one thousand, three hundred twenty-six".