19775448001 has 4 divisors (see below), whose sum is σ = 20635250112. Its totient is φ = 18915645892.

The previous prime is 19775447981. The next prime is 19775448013. The reversal of 19775448001 is 10084457791.

It is a happy number.

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 19775448001 - 2¹⁹ = 19774923713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19775448031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 429901021 + ... + 429901066.

It is an arithmetic number, because the mean of its divisors is an integer number (5158812528).

Almost surely, 2^19775448001 is an apocalyptic number.

It is an amenable number.

19775448001 is a deficient number, since it is larger than the sum of its proper divisors (859802111).

19775448001 is an equidigital number, since it uses as much as digits as its factorization.

19775448001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 859802110.

The product of its (nonzero) digits is 282240, while the sum is 46.

The spelling of 19775448001 in words is "nineteen billion, seven hundred seventy-five million, four hundred forty-eight thousand, one".