19315506560 has 128 divisors (see below), whose sum is σ = 53769096000. Its totient is φ = 6497427456.

The previous prime is 19315506547. The next prime is 19315506569. The reversal of 19315506560 is 6560551391.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19315506569) 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, 196766 + ... + 278114.

Almost surely, 2^19315506560 is an apocalyptic number.

19315506560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19315506560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26884548000).

19315506560 is an abundant number, since it is smaller than the sum of its proper divisors (34453589440).

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

19315506560 is an equidigital number, since it uses as much as digits as its factorization.

19315506560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81428 (or 81416 counting only the distinct ones).

The product of its (nonzero) digits is 121500, while the sum is 41.

The spelling of 19315506560 in words is "nineteen billion, three hundred fifteen million, five hundred six thousand, five hundred sixty".