19516473007648 has 96 divisors (see below), whose sum is σ = 39766035456000. Its totient is φ = 9418829057280.

The previous prime is 19516473007583. The next prime is 19516473007667. The reversal of 19516473007648 is 84670037461591.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 884568265 + ... + 884590327.

It is an arithmetic number, because the mean of its divisors is an integer number (414229536000).

Almost surely, 2^{19516473007648} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19516473007648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19883017728000).

19516473007648 is an abundant number, since it is smaller than the sum of its proper divisors (20249562448352).

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

19516473007648 is a wasteful number, since it uses less digits than its factorization.

19516473007648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24390 (or 24382 counting only the distinct ones).

The product of its (nonzero) digits is 30481920, while the sum is 61.

The spelling of 19516473007648 in words is "nineteen trillion, five hundred sixteen billion, four hundred seventy-three million, seven thousand, six hundred forty-eight".