21034533356 has 6 divisors (see below), whose sum is σ = 36810433380. Its totient is φ = 10517266676.

The previous prime is 21034533349. The next prime is 21034533383. The reversal of 21034533356 is 65333543012.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2629316666 + ... + 2629316673.

It is an arithmetic number, because the mean of its divisors is an integer number (6135072230).

Almost surely, 2^21034533356 is an apocalyptic number.

It is an amenable number.

21034533356 is a deficient number, since it is larger than the sum of its proper divisors (15775900024).

21034533356 is a wasteful number, since it uses less digits than its factorization.

21034533356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5258633343 (or 5258633341 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 35.

The spelling of 21034533356 in words is "twenty-one billion, thirty-four million, five hundred thirty-three thousand, three hundred fifty-six".