868591084357 has 2 divisors, whose sum is σ = 868591084358. Its totient is φ = 868591084356.

The previous prime is 868591084331. The next prime is 868591084363. The reversal of 868591084357 is 753480195868.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 858367043361 + 10224040996 = 926481^2 + 101114^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-868591084357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (868591084367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 434295542178 + 434295542179.

It is an arithmetic number, because the mean of its divisors is an integer number (434295542179).

Almost surely, 2^868591084357 is an apocalyptic number.

It is an amenable number.

868591084357 is a deficient number, since it is larger than the sum of its proper divisors (1).

868591084357 is an equidigital number, since it uses as much as digits as its factorization.

868591084357 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 58060800, while the sum is 64.

The spelling of 868591084357 in words is "eight hundred sixty-eight billion, five hundred ninety-one million, eighty-four thousand, three hundred fifty-seven".