20522140553 has 8 divisors (see below), whose sum is σ = 20591815872. Its totient is φ = 20452579056.

The previous prime is 20522140531. The next prime is 20522140579. The reversal of 20522140553 is 35504122502.

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 20522140553 - 2¹² = 20522136457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20522140253) 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, 340826 + ... + 396492.

It is an arithmetic number, because the mean of its divisors is an integer number (2573976984).

Almost surely, 2^20522140553 is an apocalyptic number.

It is an amenable number.

20522140553 is a deficient number, since it is larger than the sum of its proper divisors (69675319).

20522140553 is an equidigital number, since it uses as much as digits as its factorization.

20522140553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56911.

The product of its (nonzero) digits is 12000, while the sum is 29.

The spelling of 20522140553 in words is "twenty billion, five hundred twenty-two million, one hundred forty thousand, five hundred fifty-three".