21929330353 has 32 divisors (see below), whose sum is σ = 26834353920. Its totient is φ = 17492889600.

The previous prime is 21929330351. The next prime is 21929330363. The reversal of 21929330353 is 35303392912.

It is a cyclic number.

It is not a de Polignac number, because 21929330353 - 2¹ = 21929330351 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21929330351) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7690378 + ... + 7693228.

It is an arithmetic number, because the mean of its divisors is an integer number (838573560).

Almost surely, 2^21929330353 is an apocalyptic number.

It is an amenable number.

21929330353 is a deficient number, since it is larger than the sum of its proper divisors (4905023567).

21929330353 is a wasteful number, since it uses less digits than its factorization.

21929330353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3577.

The product of its (nonzero) digits is 131220, while the sum is 40.

The spelling of 21929330353 in words is "twenty-one billion, nine hundred twenty-nine million, three hundred thirty thousand, three hundred fifty-three".