6419486785991 has 8 divisors (see below), whose sum is σ = 6428168649744. Its totient is φ = 6410810666880.

The previous prime is 6419486785891. The next prime is 6419486786057. The reversal of 6419486785991 is 1995876849146.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6419486785991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6419486785891) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 802655 + ... + 3671951.

It is an arithmetic number, because the mean of its divisors is an integer number (803521081218).

Almost surely, 2^{6419486785991} is an apocalyptic number.

6419486785991 is a deficient number, since it is larger than the sum of its proper divisors (8681863753).

6419486785991 is a wasteful number, since it uses less digits than its factorization.

6419486785991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2872321.

The product of its digits is 940584960, while the sum is 77.

The spelling of 6419486785991 in words is "six trillion, four hundred nineteen billion, four hundred eighty-six million, seven hundred eighty-five thousand, nine hundred ninety-one".