6813587422971 has 24 divisors (see below), whose sum is σ = 11306716022784. Its totient is φ = 3873093816240.

The previous prime is 6813587422937. The next prime is 6813587422979. The reversal of 6813587422971 is 1792247853186.

6813587422971 is a `hidden beast` number, since 6 + 8 + 1 + 3 + 587 + 42 + 2 + 9 + 7 + 1 = 666.

It is not a de Polignac number, because 6813587422971 - 2⁷ = 6813587422843 is a prime.

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

It is a junction number, because it is equal to n+sod(n) for n = 6813587422899 and 6813587422908.

It is not an unprimeable number, because it can be changed into a prime (6813587422979) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 283108861 + ... + 283132926.

It is an arithmetic number, because the mean of its divisors is an integer number (471113167616).

Almost surely, 2^{6813587422971} is an apocalyptic number.

6813587422971 is a deficient number, since it is larger than the sum of its proper divisors (4493128599813).

6813587422971 is a wasteful number, since it uses less digits than its factorization.

6813587422971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 566241991 (or 566241988 counting only the distinct ones).

The product of its digits is 40642560, while the sum is 63.

The spelling of 6813587422971 in words is "six trillion, eight hundred thirteen billion, five hundred eighty-seven million, four hundred twenty-two thousand, nine hundred seventy-one".