21030554543302 has 4 divisors (see below), whose sum is σ = 31545831814956. Its totient is φ = 10515277271650.

The previous prime is 21030554543281. The next prime is 21030554543353. The reversal of 21030554543302 is 20334545503012.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5257638635824 + ... + 5257638635827.

It is an arithmetic number, because the mean of its divisors is an integer number (7886457953739).

Almost surely, 2^{21030554543302} is an apocalyptic number.

21030554543302 is a deficient number, since it is larger than the sum of its proper divisors (10515277271654).

21030554543302 is a wasteful number, since it uses less digits than its factorization.

21030554543302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10515277271653.

The product of its (nonzero) digits is 216000, while the sum is 37.

The spelling of 21030554543302 in words is "twenty-one trillion, thirty billion, five hundred fifty-four million, five hundred forty-three thousand, three hundred two".