19541068220 has 24 divisors (see below), whose sum is σ = 42037129008. Its totient is φ = 7625782400.

The previous prime is 19541068207. The next prime is 19541068229. The reversal of 19541068220 is 2286014591.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19541068229) 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 7 ways as a sum of consecutive naturals, for example, 11914466 + ... + 11916105.

It is an arithmetic number, because the mean of its divisors is an integer number (1751547042).

Almost surely, 2^19541068220 is an apocalyptic number.

19541068220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19541068220 is an abundant number, since it is smaller than the sum of its proper divisors (22496060788).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19541068220 is a wasteful number, since it uses less digits than its factorization.

19541068220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23830621 (or 23830619 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 38.

The spelling of 19541068220 in words is "nineteen billion, five hundred forty-one million, sixty-eight thousand, two hundred twenty".