19304963475648 has 112 divisors (see below), whose sum is σ = 52845258881280. Its totient is φ = 6212357673984.

The previous prime is 19304963475647. The next prime is 19304963475661. The reversal of 19304963475648 is 84657436940391.

It is a super-2 number, since 2×19304963475648² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (19304963475641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47946015 + ... + 48346977.

Almost surely, 2^{19304963475648} 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 19304963475648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26422629440640).

19304963475648 is an abundant number, since it is smaller than the sum of its proper divisors (33540295405632).

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

19304963475648 is a wasteful number, since it uses less digits than its factorization.

19304963475648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409654 (or 409644 counting only the distinct ones).

The product of its (nonzero) digits is 470292480, while the sum is 69.

The spelling of 19304963475648 in words is "nineteen trillion, three hundred four billion, nine hundred sixty-three million, four hundred seventy-five thousand, six hundred forty-eight".