20413203531553 has 8 divisors (see below), whose sum is σ = 23399856964160. Its totient is φ = 17444170473840.

The previous prime is 20413203531551. The next prime is 20413203531557. The reversal of 20413203531553 is 35513530231402.

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

It is a cyclic number.

It is not a de Polignac number, because 20413203531553 - 2¹ = 20413203531551 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20413203531551) 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, 4405091238 + ... + 4405095871.

It is an arithmetic number, because the mean of its divisors is an integer number (2924982120520).

Almost surely, 2^{20413203531553} is an apocalyptic number.

It is an amenable number.

20413203531553 is a deficient number, since it is larger than the sum of its proper divisors (2986653432607).

20413203531553 is an equidigital number, since it uses as much as digits as its factorization.

20413203531553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8810187447.

The product of its (nonzero) digits is 162000, while the sum is 37.

Adding to 20413203531553 its reverse (35513530231402), we get a palindrome (55926733762955).

The spelling of 20413203531553 in words is "twenty trillion, four hundred thirteen billion, two hundred three million, five hundred thirty-one thousand, five hundred fifty-three".