891151859344297 has 2 divisors, whose sum is σ = 891151859344298. Its totient is φ = 891151859344296.

The previous prime is 891151859344267. The next prime is 891151859344421. The reversal of 891151859344297 is 792443958151198.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 845633372210176 + 45518487134121 = 29079776^2 + 6746739^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-891151859344297 is a prime.

It is not a weakly prime, because it can be changed into another prime (891151859344207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 445575929672148 + 445575929672149.

It is an arithmetic number, because the mean of its divisors is an integer number (445575929672149).

Almost surely, 2^{891151859344297} is an apocalyptic number.

It is an amenable number.

891151859344297 is a deficient number, since it is larger than the sum of its proper divisors (1).

891151859344297 is an equidigital number, since it uses as much as digits as its factorization.

891151859344297 is an evil number, because the sum of its binary digits is even.

The product of its digits is 783820800, while the sum is 76.

The spelling of 891151859344297 in words is "eight hundred ninety-one trillion, one hundred fifty-one billion, eight hundred fifty-nine million, three hundred forty-four thousand, two hundred ninety-seven".