21868028835802 has 16 divisors (see below), whose sum is σ = 32911661436192. Its totient is φ = 10897481022480.

The previous prime is 21868028835797. The next prime is 21868028835823. The reversal of 21868028835802 is 20853882086812.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5827152 + ... + 8814292.

It is an arithmetic number, because the mean of its divisors is an integer number (2056978839762).

Almost surely, 2^{21868028835802} is an apocalyptic number.

21868028835802 is a deficient number, since it is larger than the sum of its proper divisors (11043632600390).

21868028835802 is a wasteful number, since it uses less digits than its factorization.

21868028835802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2999373.

The product of its (nonzero) digits is 23592960, while the sum is 61.

The spelling of 21868028835802 in words is "twenty-one trillion, eight hundred sixty-eight billion, twenty-eight million, eight hundred thirty-five thousand, eight hundred two".