1219719795840 has 768 divisors, whose sum is σ = 5221414598400. Its totient is φ = 255480791040.

The previous prime is 1219719795803. The next prime is 1219719795859. The reversal of 1219719795840 is 485979179121.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 72849870 + ... + 72866610.

It is an arithmetic number, because the mean of its divisors is an integer number (6798716925).

Almost surely, 2^{1219719795840} is an apocalyptic number.

1219719795840 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 1219719795840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2610707299200).

1219719795840 is an abundant number, since it is smaller than the sum of its proper divisors (4001694802560).

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

1219719795840 is a wasteful number, since it uses less digits than its factorization.

1219719795840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16925 (or 16910 counting only the distinct ones).

The product of its (nonzero) digits is 11430720, while the sum is 63.

The spelling of 1219719795840 in words is "one trillion, two hundred nineteen billion, seven hundred nineteen million, seven hundred ninety-five thousand, eight hundred forty".