6491376319999 has 8 divisors (see below), whose sum is σ = 6781507794432. Its totient is φ = 6206290610520.

The previous prime is 6491376319919. The next prime is 6491376320027. The reversal of 6491376319999 is 9999136731946.

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

It is not a de Polignac number, because 6491376319999 - 2³³ = 6482786385407 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 (6491376319919) 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, 1261438609 + ... + 1261443754.

It is an arithmetic number, because the mean of its divisors is an integer number (847688474304).

Almost surely, 2^{6491376319999} is an apocalyptic number.

6491376319999 is a deficient number, since it is larger than the sum of its proper divisors (290131474433).

6491376319999 is a wasteful number, since it uses less digits than its factorization.

6491376319999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2522882477.

The product of its digits is 535692528, while the sum is 76.

The spelling of 6491376319999 in words is "six trillion, four hundred ninety-one billion, three hundred seventy-six million, three hundred nineteen thousand, nine hundred ninety-nine".