19779760000 has 960 divisors, whose sum is σ = 69975100800. Its totient is φ = 5391360000.

The previous prime is 19779759919. The next prime is 19779760003. The reversal of 19779760000 is 6797791.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19779760003) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 1041039991 + ... + 1041040009.

It is an arithmetic number, because the mean of its divisors is an integer number (72890730).

Almost surely, 2^19779760000 is an apocalyptic number.

19779760000 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 19779760000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34987550400).

19779760000 is an abundant number, since it is smaller than the sum of its proper divisors (50195340800).

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

19779760000 is a wasteful number, since it uses less digits than its factorization.

19779760000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97 (or 57 counting only the distinct ones).

The product of its (nonzero) digits is 166698, while the sum is 46.

The spelling of 19779760000 in words is "nineteen billion, seven hundred seventy-nine million, seven hundred sixty thousand".