19545009016 has 32 divisors (see below), whose sum is σ = 39489150960. Its totient is φ = 9015455232.

The previous prime is 19545009013. The next prime is 19545009067. The reversal of 19545009016 is 61090054591.

It is a self number, because there is not a number n which added to its sum of digits gives 19545009016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19545009013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124656 + ... + 233728.

Almost surely, 2^19545009016 is an apocalyptic number.

It is an amenable number.

19545009016 is an abundant number, since it is smaller than the sum of its proper divisors (19944141944).

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

19545009016 is a wasteful number, since it uses less digits than its factorization.

19545009016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110815 (or 110811 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 40.

The spelling of 19545009016 in words is "nineteen billion, five hundred forty-five million, nine thousand, sixteen".