20553205321435 has 8 divisors (see below), whose sum is σ = 24663905926416. Its totient is φ = 16442524563360.

The previous prime is 20553205321423. The next prime is 20553205321457. The reversal of 20553205321435 is 53412350235502.

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

It is not a de Polignac number, because 20553205321435 - 2⁵ = 20553205321403 is a prime.

It is a Duffinian number.

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, 2579449 + ... + 6910858.

It is an arithmetic number, because the mean of its divisors is an integer number (3082988240802).

Almost surely, 2^{20553205321435} is an apocalyptic number.

20553205321435 is a deficient number, since it is larger than the sum of its proper divisors (4110700604981).

20553205321435 is an equidigital number, since it uses as much as digits as its factorization.

20553205321435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9923453.

The product of its (nonzero) digits is 540000, while the sum is 40.

Adding to 20553205321435 its reverse (53412350235502), we get a palindrome (73965555556937).

The spelling of 20553205321435 in words is "twenty trillion, five hundred fifty-three billion, two hundred five million, three hundred twenty-one thousand, four hundred thirty-five".