806997167531 has 2 divisors, whose sum is σ = 806997167532. Its totient is φ = 806997167530.

The previous prime is 806997167497. The next prime is 806997167611. The reversal of 806997167531 is 135761799608.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-806997167531 is a prime.

It is a super-2 number, since 2×806997167531² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (806997167131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 403498583765 + 403498583766.

It is an arithmetic number, because the mean of its divisors is an integer number (403498583766).

Almost surely, 2^806997167531 is an apocalyptic number.

806997167531 is a deficient number, since it is larger than the sum of its proper divisors (1).

806997167531 is an equidigital number, since it uses as much as digits as its factorization.

806997167531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17146080, while the sum is 62.

The spelling of 806997167531 in words is "eight hundred six billion, nine hundred ninety-seven million, one hundred sixty-seven thousand, five hundred thirty-one".