85177851907 has 2 divisors, whose sum is σ = 85177851908. Its totient is φ = 85177851906.

The previous prime is 85177851883. The next prime is 85177851929. The reversal of 85177851907 is 70915877158.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85177851907 - 2¹¹ = 85177849859 is a prime.

It is not a weakly prime, because it can be changed into another prime (85177851607) 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, 42588925953 + 42588925954.

It is an arithmetic number, because the mean of its divisors is an integer number (42588925954).

Almost surely, 2^85177851907 is an apocalyptic number.

85177851907 is a deficient number, since it is larger than the sum of its proper divisors (1).

85177851907 is an equidigital number, since it uses as much as digits as its factorization.

85177851907 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4939200, while the sum is 58.

The spelling of 85177851907 in words is "eighty-five billion, one hundred seventy-seven million, eight hundred fifty-one thousand, nine hundred seven".