1219799407440 has 160 divisors (see below), whose sum is σ = 4096924672896. Its totient is φ = 299026022400.

The previous prime is 1219799407363. The next prime is 1219799407441. The reversal of 1219799407440 is 447049979121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1219799407441) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3300961 + ... + 3651840.

Almost surely, 2^{1219799407440} is an apocalyptic number.

1219799407440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1219799407440 is an abundant number, since it is smaller than the sum of its proper divisors (2877125265456).

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

1219799407440 is a wasteful number, since it uses less digits than its factorization.

1219799407440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6952877 (or 6952871 counting only the distinct ones).

The product of its (nonzero) digits is 4572288, while the sum is 57.

The spelling of 1219799407440 in words is "one trillion, two hundred nineteen billion, seven hundred ninety-nine million, four hundred seven thousand, four hundred forty".