85623706787 has 2 divisors, whose sum is σ = 85623706788. Its totient is φ = 85623706786.

The previous prime is 85623706723. The next prime is 85623706823. The reversal of 85623706787 is 78760732658.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85623706787 - 2⁶ = 85623706723 is a prime.

It is a super-2 number, since 2×85623706787² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (85623706187) 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, 42811853393 + 42811853394.

It is an arithmetic number, because the mean of its divisors is an integer number (42811853394).

Almost surely, 2^85623706787 is an apocalyptic number.

85623706787 is a deficient number, since it is larger than the sum of its proper divisors (1).

85623706787 is an equidigital number, since it uses as much as digits as its factorization.

85623706787 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23708160, while the sum is 59.

The spelling of 85623706787 in words is "eighty-five billion, six hundred twenty-three million, seven hundred six thousand, seven hundred eighty-seven".