19496640000 has 400 divisors, whose sum is σ = 67803196032. Its totient is φ = 4967424000.

The previous prime is 19496639963. The next prime is 19496640011. The reversal of 19496640000 is 4669491.

It is a tau number, because it is divible by the number of its divisors (400).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 22079559 + ... + 22080441.

Almost surely, 2^19496640000 is an apocalyptic number.

19496640000 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 19496640000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33901598016).

19496640000 is an abundant number, since it is smaller than the sum of its proper divisors (48306556032).

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

19496640000 is an frugal number, since it uses more digits than its factorization.

19496640000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 947 (or 916 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 39.

The spelling of 19496640000 in words is "nineteen billion, four hundred ninety-six million, six hundred forty thousand".