854315430691 has 2 divisors, whose sum is σ = 854315430692. Its totient is φ = 854315430690.

The previous prime is 854315430613. The next prime is 854315430781. The reversal of 854315430691 is 196034513458.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-854315430691 is a prime.

It is not a weakly prime, because it can be changed into another prime (854315430191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 427157715345 + 427157715346.

It is an arithmetic number, because the mean of its divisors is an integer number (427157715346).

Almost surely, 2^854315430691 is an apocalyptic number.

854315430691 is a deficient number, since it is larger than the sum of its proper divisors (1).

854315430691 is an equidigital number, since it uses as much as digits as its factorization.

854315430691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1555200, while the sum is 49.

The spelling of 854315430691 in words is "eight hundred fifty-four billion, three hundred fifteen million, four hundred thirty thousand, six hundred ninety-one".