20321727147 has 16 divisors (see below), whose sum is σ = 30142612000. Its totient is φ = 13531460832.

The previous prime is 20321727137. The next prime is 20321727169. The reversal of 20321727147 is 74172712302.

20321727147 is a `hidden beast` number, since 20 + 321 + 7 + 271 + 47 = 666.

It is not a de Polignac number, because 20321727147 - 2³² = 16026759851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20321727137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 431572 + ... + 476337.

It is an arithmetic number, because the mean of its divisors is an integer number (1883913250).

Almost surely, 2^20321727147 is an apocalyptic number.

20321727147 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

20321727147 is a deficient number, since it is larger than the sum of its proper divisors (9820884853).

20321727147 is an equidigital number, since it uses as much as digits as its factorization.

20321727147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 908747 (or 908741 counting only the distinct ones).

The product of its (nonzero) digits is 32928, while the sum is 36.

The spelling of 20321727147 in words is "twenty billion, three hundred twenty-one million, seven hundred twenty-seven thousand, one hundred forty-seven".