20532146653 has 8 divisors (see below), whose sum is σ = 21478807800. Its totient is φ = 19601395968.

The previous prime is 20532146639. The next prime is 20532146683. The reversal of 20532146653 is 35664123502.

It can be written as a sum of positive squares in 4 ways, for example, as 2375392644 + 18156754009 = 48738^2 + 134747^2 .

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 20532146653 - 2¹³ = 20532138461 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 (20532146683) 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, 3974976 + ... + 3980137.

It is an arithmetic number, because the mean of its divisors is an integer number (2684850975).

Almost surely, 2^20532146653 is an apocalyptic number.

It is an amenable number.

20532146653 is a deficient number, since it is larger than the sum of its proper divisors (946661147).

20532146653 is an equidigital number, since it uses as much as digits as its factorization.

20532146653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7955231.

The product of its (nonzero) digits is 129600, while the sum is 37.

The spelling of 20532146653 in words is "twenty billion, five hundred thirty-two million, one hundred forty-six thousand, six hundred fifty-three".