21144545302 has 8 divisors (see below), whose sum is σ = 31729123800. Its totient is φ = 10568170704.

The previous prime is 21144545281. The next prime is 21144545327. The reversal of 21144545302 is 20354544112.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2044527 + ... + 2054842.

It is an arithmetic number, because the mean of its divisors is an integer number (3966140475).

Almost surely, 2^21144545302 is an apocalyptic number.

21144545302 is a deficient number, since it is larger than the sum of its proper divisors (10584578498).

21144545302 is a wasteful number, since it uses less digits than its factorization.

21144545302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4101950.

The product of its (nonzero) digits is 19200, while the sum is 31.

The spelling of 21144545302 in words is "twenty-one billion, one hundred forty-four million, five hundred forty-five thousand, three hundred two".