19471107540 has 48 divisors (see below), whose sum is σ = 54537094080. Its totient is φ = 5190581760.

The previous prime is 19471107497. The next prime is 19471107541. The reversal of 19471107540 is 4570117491.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19471107541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135271 + ... + 239249.

It is an arithmetic number, because the mean of its divisors is an integer number (1136189460).

Almost surely, 2^19471107540 is an apocalyptic number.

19471107540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19471107540 is an abundant number, since it is smaller than the sum of its proper divisors (35065986540).

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

19471107540 is a wasteful number, since it uses less digits than its factorization.

19471107540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107112 (or 107110 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 39.

The spelling of 19471107540 in words is "nineteen billion, four hundred seventy-one million, one hundred seven thousand, five hundred forty".