19427941559944 has 16 divisors (see below), whose sum is σ = 36427713037020. Its totient is φ = 9713884750080.

The previous prime is 19427941559911. The next prime is 19427941559947. The reversal of 19427941559944 is 44995514972491.

It can be written as a sum of positive squares in 2 ways, for example, as 19383150916900 + 44790643044 = 4402630^2 + 211638^2 .

It is not an unprimeable number, because it can be changed into a prime (19427941559947) 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, 9788877 + ... + 11605084.

Almost surely, 2^{19427941559944} is an apocalyptic number.

It is an amenable number.

19427941559944 is a deficient number, since it is larger than the sum of its proper divisors (16999771477076).

19427941559944 is a wasteful number, since it uses less digits than its factorization.

19427941559944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21507480 (or 21507476 counting only the distinct ones).

The product of its digits is 587865600, while the sum is 73.

The spelling of 19427941559944 in words is "nineteen trillion, four hundred twenty-seven billion, nine hundred forty-one million, five hundred fifty-nine thousand, nine hundred forty-four".