19427544885 has 16 divisors (see below), whose sum is σ = 35524653696. Its totient is φ = 8881163328.

The previous prime is 19427544883. The next prime is 19427544901. The reversal of 19427544885 is 58844572491.

It is not a de Polignac number, because 19427544885 - 2¹ = 19427544883 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19427544881) 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, 92512014 + ... + 92512223.

It is an arithmetic number, because the mean of its divisors is an integer number (2220290856).

Almost surely, 2^19427544885 is an apocalyptic number.

19427544885 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

19427544885 is a deficient number, since it is larger than the sum of its proper divisors (16097108811).

19427544885 is a wasteful number, since it uses less digits than its factorization.

19427544885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185024252.

The product of its digits is 12902400, while the sum is 57.

The spelling of 19427544885 in words is "nineteen billion, four hundred twenty-seven million, five hundred forty-four thousand, eight hundred eighty-five".