19560960816 has 80 divisors (see below), whose sum is σ = 52366553088. Its totient is φ = 6285312000.

The previous prime is 19560960787. The next prime is 19560960827. The reversal of 19560960816 is 61806906591.

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, 356841 + ... + 407991.

Almost surely, 2^19560960816 is an apocalyptic number.

19560960816 is a gapful number since it is divisible by the number (16) 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 19560960816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26183276544).

19560960816 is an abundant number, since it is smaller than the sum of its proper divisors (32805592272).

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

19560960816 is a wasteful number, since it uses less digits than its factorization.

19560960816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51450 (or 51444 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 51.

The spelling of 19560960816 in words is "nineteen billion, five hundred sixty million, nine hundred sixty thousand, eight hundred sixteen".