20530131847853 has 8 divisors (see below), whose sum is σ = 20533955554200. Its totient is φ = 20526308382528.

The previous prime is 20530131847847. The next prime is 20530131847871. The reversal of 20530131847853 is 35874813103502.

It can be written as a sum of positive squares in 4 ways, for example, as 4804679873764 + 15725451974089 = 2191958^2 + 3965533^2 .

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 20530131847853 - 2⁸ = 20530131847597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20530131847873) 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, 292296143 + ... + 292366371.

It is an arithmetic number, because the mean of its divisors is an integer number (2566744444275).

Almost surely, 2^{20530131847853} is an apocalyptic number.

It is an amenable number.

20530131847853 is a deficient number, since it is larger than the sum of its proper divisors (3823706347).

20530131847853 is an equidigital number, since it uses as much as digits as its factorization.

20530131847853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120511.

The product of its (nonzero) digits is 2419200, while the sum is 50.

The spelling of 20530131847853 in words is "twenty trillion, five hundred thirty billion, one hundred thirty-one million, eight hundred forty-seven thousand, eight hundred fifty-three".