21063552029 has 8 divisors (see below), whose sum is σ = 22836067800. Its totient is φ = 19312785216.

The previous prime is 21063552001. The next prime is 21063552091. The reversal of 21063552029 is 92025536012.

It can be written as a sum of positive squares in 4 ways, for example, as 1231308100 + 19832243929 = 35090^2 + 140827^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21063552029 - 2²⁴ = 21046774813 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 21063552029.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21063558029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5435222 + ... + 5439095.

It is an arithmetic number, because the mean of its divisors is an integer number (2854508475).

Almost surely, 2^21063552029 is an apocalyptic number.

It is an amenable number.

21063552029 is a deficient number, since it is larger than the sum of its proper divisors (1772515771).

21063552029 is a wasteful number, since it uses less digits than its factorization.

21063552029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10874479.

The product of its (nonzero) digits is 32400, while the sum is 35.

The spelling of 21063552029 in words is "twenty-one billion, sixty-three million, five hundred fifty-two thousand, twenty-nine".