20271888001 has 4 divisors (see below), whose sum is σ = 20925819904. Its totient is φ = 19617956100.

The previous prime is 20271887981. The next prime is 20271888023. The reversal of 20271888001 is 10088817202.

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 20271888001 - 2¹³ = 20271879809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20271888061) 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, 326965905 + ... + 326965966.

It is an arithmetic number, because the mean of its divisors is an integer number (5231454976).

Almost surely, 2^20271888001 is an apocalyptic number.

It is an amenable number.

20271888001 is a deficient number, since it is larger than the sum of its proper divisors (653931903).

20271888001 is an equidigital number, since it uses as much as digits as its factorization.

20271888001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 653931902.

The product of its (nonzero) digits is 14336, while the sum is 37.

The spelling of 20271888001 in words is "twenty billion, two hundred seventy-one million, eight hundred eighty-eight thousand, one".