864526917187 has 2 divisors, whose sum is σ = 864526917188. Its totient is φ = 864526917186.

The previous prime is 864526917143. The next prime is 864526917217. The reversal of 864526917187 is 781719625468.

864526917187 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 864526917187 - 2²³ = 864518528579 is a prime.

It is not a weakly prime, because it can be changed into another prime (864526917887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 432263458593 + 432263458594.

It is an arithmetic number, because the mean of its divisors is an integer number (432263458594).

Almost surely, 2^864526917187 is an apocalyptic number.

864526917187 is a deficient number, since it is larger than the sum of its proper divisors (1).

864526917187 is an equidigital number, since it uses as much as digits as its factorization.

864526917187 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40642560, while the sum is 64.

The spelling of 864526917187 in words is "eight hundred sixty-four billion, five hundred twenty-six million, nine hundred seventeen thousand, one hundred eighty-seven".