6419491944460 has 96 divisors (see below), whose sum is σ = 15660887639040. Its totient is φ = 2164674758400.

The previous prime is 6419491944403. The next prime is 6419491944473. The reversal of 6419491944460 is 644491949146.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (61).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 104251161 + ... + 104312719.

It is an arithmetic number, because the mean of its divisors is an integer number (163134246240).

Almost surely, 2^{6419491944460} 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 6419491944460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7830443819520).

6419491944460 is an abundant number, since it is smaller than the sum of its proper divisors (9241395694580).

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

6419491944460 is a wasteful number, since it uses less digits than its factorization.

6419491944460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73847 (or 73845 counting only the distinct ones).

The product of its (nonzero) digits is 26873856, while the sum is 61.

The spelling of 6419491944460 in words is "six trillion, four hundred nineteen billion, four hundred ninety-one million, nine hundred forty-four thousand, four hundred sixty".