21652405120435 has 4 divisors (see below), whose sum is σ = 25982886144528. Its totient is φ = 17321924096344.

The previous prime is 21652405120403. The next prime is 21652405120441. The reversal of 21652405120435 is 53402150425612.

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

It is a cyclic number.

It is not a de Polignac number, because 21652405120435 - 2⁵ = 21652405120403 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2165240512039 + ... + 2165240512048.

It is an arithmetic number, because the mean of its divisors is an integer number (6495721536132).

Almost surely, 2^{21652405120435} is an apocalyptic number.

21652405120435 is a deficient number, since it is larger than the sum of its proper divisors (4330481024093).

21652405120435 is an equidigital number, since it uses as much as digits as its factorization.

21652405120435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4330481024092.

The product of its (nonzero) digits is 288000, while the sum is 40.

The spelling of 21652405120435 in words is "twenty-one trillion, six hundred fifty-two billion, four hundred five million, one hundred twenty thousand, four hundred thirty-five".