21032729326 has 24 divisors (see below), whose sum is σ = 38631547080. Its totient is φ = 8539603632.

The previous prime is 21032729321. The next prime is 21032729381. The reversal of 21032729326 is 62392723012.

It is a super-3 number, since 3×21032729326³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21032729321) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5646025 + ... + 5649748.

It is an arithmetic number, because the mean of its divisors is an integer number (1609647795).

Almost surely, 2^21032729326 is an apocalyptic number.

21032729326 is a deficient number, since it is larger than the sum of its proper divisors (17598817754).

21032729326 is a wasteful number, since it uses less digits than its factorization.

21032729326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11295808 (or 11295801 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 37.

The spelling of 21032729326 in words is "twenty-one billion, thirty-two million, seven hundred twenty-nine thousand, three hundred twenty-six".