85554013817 has 2 divisors, whose sum is σ = 85554013818. Its totient is φ = 85554013816.

The previous prime is 85554013757. The next prime is 85554013819. The reversal of 85554013817 is 71831045558.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85546890256 + 7123561 = 292484^2 + 2669^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85554013817 is a prime.

Together with 85554013819, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (85554013819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42777006908 + 42777006909.

It is an arithmetic number, because the mean of its divisors is an integer number (42777006909).

Almost surely, 2^85554013817 is an apocalyptic number.

It is an amenable number.

85554013817 is a deficient number, since it is larger than the sum of its proper divisors (1).

85554013817 is an equidigital number, since it uses as much as digits as its factorization.

85554013817 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672000, while the sum is 47.

The spelling of 85554013817 in words is "eighty-five billion, five hundred fifty-four million, thirteen thousand, eight hundred seventeen".