20553523201 has 8 divisors (see below), whose sum is σ = 21958203680. Its totient is φ = 19181134368.

The previous prime is 20553523157. The next prime is 20553523213. The reversal of 20553523201 is 10232535502.

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 20553523201 - 2¹⁹ = 20552998913 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20553523201.

It is not an unprimeable number, because it can be changed into a prime (20553523231) 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, 8071596 + ... + 8074141.

It is an arithmetic number, because the mean of its divisors is an integer number (2744775460).

Almost surely, 2^20553523201 is an apocalyptic number.

It is an amenable number.

20553523201 is a deficient number, since it is larger than the sum of its proper divisors (1404680479).

20553523201 is a wasteful number, since it uses less digits than its factorization.

20553523201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16145823.

The product of its (nonzero) digits is 9000, while the sum is 28.

The spelling of 20553523201 in words is "twenty billion, five hundred fifty-three million, five hundred twenty-three thousand, two hundred one".