857496945601 has 2 divisors, whose sum is σ = 857496945602. Its totient is φ = 857496945600.

The previous prime is 857496945593. The next prime is 857496945611. The reversal of 857496945601 is 106549694758.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 751480934400 + 106016011201 = 866880^2 + 325601^2 .

It is a cyclic number.

It is not a de Polignac number, because 857496945601 - 2³ = 857496945593 is a prime.

It is not a weakly prime, because it can be changed into another prime (857496945611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 428748472800 + 428748472801.

It is an arithmetic number, because the mean of its divisors is an integer number (428748472801).

Almost surely, 2^857496945601 is an apocalyptic number.

It is an amenable number.

857496945601 is a deficient number, since it is larger than the sum of its proper divisors (1).

857496945601 is an equidigital number, since it uses as much as digits as its factorization.

857496945601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 65318400, while the sum is 64.

The spelling of 857496945601 in words is "eight hundred fifty-seven billion, four hundred ninety-six million, nine hundred forty-five thousand, six hundred one".