7947819420000 has 240 divisors, whose sum is σ = 26206969485312. Its totient is φ = 2108319040000.

The previous prime is 7947819419989. The next prime is 7947819420007. The reversal of 7947819420000 is 249187497.

It is a tau number, because it is divible by the number of its divisors (240).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7947819420007) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 11113237 + ... + 11806763.

Almost surely, 2^{7947819420000} 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 7947819420000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13103484742656).

7947819420000 is an abundant number, since it is smaller than the sum of its proper divisors (18259150065312).

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

7947819420000 is a wasteful number, since it uses less digits than its factorization.

7947819420000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 693751 (or 693728 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 51.

The spelling of 7947819420000 in words is "seven trillion, nine hundred forty-seven billion, eight hundred nineteen million, four hundred twenty thousand".