21860892053609 has 8 divisors (see below), whose sum is σ = 25335762219648. Its totient is φ = 18473993284320.

The previous prime is 21860892053591. The next prime is 21860892053629. The reversal of 21860892053609 is 90635029806812.

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

It is not a de Polignac number, because 21860892053609 - 2⁴⁰ = 20761380425833 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (21860892053629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21992848652 + ... + 21992849645.

It is an arithmetic number, because the mean of its divisors is an integer number (3166970277456).

Almost surely, 2^{21860892053609} is an apocalyptic number.

It is an amenable number.

21860892053609 is a deficient number, since it is larger than the sum of its proper divisors (3474870166039).

21860892053609 is an equidigital number, since it uses as much as digits as its factorization.

21860892053609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43985698375.

The product of its (nonzero) digits is 11197440, while the sum is 59.

The spelling of 21860892053609 in words is "twenty-one trillion, eight hundred sixty billion, eight hundred ninety-two million, fifty-three thousand, six hundred nine".