20888539201 has 4 divisors (see below), whose sum is σ = 21140208432. Its totient is φ = 20636869972.

The previous prime is 20888539159. The next prime is 20888539213. The reversal of 20888539201 is 10293588802.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20888539201 - 2⁹ = 20888538689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20888539501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125834491 + ... + 125834656.

It is an arithmetic number, because the mean of its divisors is an integer number (5285052108).

Almost surely, 2^20888539201 is an apocalyptic number.

It is an amenable number.

20888539201 is a deficient number, since it is larger than the sum of its proper divisors (251669231).

20888539201 is an equidigital number, since it uses as much as digits as its factorization.

20888539201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251669230.

The product of its (nonzero) digits is 276480, while the sum is 46.

The spelling of 20888539201 in words is "twenty billion, eight hundred eighty-eight million, five hundred thirty-nine thousand, two hundred one".