6397409671191 has 40 divisors (see below), whose sum is σ = 11914752415104. Its totient is φ = 3323329696080.

The previous prime is 6397409671151. The next prime is 6397409671207. The reversal of 6397409671191 is 1911769047936.

6397409671191 is a `hidden beast` number, since 6 + 39 + 7 + 409 + 6 + 7 + 1 + 191 = 666.

It is not a de Polignac number, because 6397409671191 - 2¹³ = 6397409662999 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6397409671111) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 512853285 + ... + 512865758.

Almost surely, 2^{6397409671191} is an apocalyptic number.

6397409671191 is a deficient number, since it is larger than the sum of its proper divisors (5517342743913).

6397409671191 is a wasteful number, since it uses less digits than its factorization.

6397409671191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1025719073 (or 1025719064 counting only the distinct ones).

The product of its (nonzero) digits is 15431472, while the sum is 63.

The spelling of 6397409671191 in words is "six trillion, three hundred ninety-seven billion, four hundred nine million, six hundred seventy-one thousand, one hundred ninety-one".