85464238455 has 28 divisors (see below), whose sum is σ = 153765294840. Its totient is φ = 45580925232.

The previous prime is 85464238421. The next prime is 85464238463. The reversal of 85464238455 is 55483246458.

85464238455 is a `hidden beast` number, since 8 + 546 + 42 + 3 + 8 + 4 + 55 = 666.

It is not a de Polignac number, because 85464238455 - 2²⁰ = 85463189879 is a prime.

It is a congruent number.

It is an unprimeable number.

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 in 27 ways as a sum of consecutive naturals, for example, 11719845 + ... + 11727134.

Almost surely, 2^85464238455 is an apocalyptic number.

85464238455 is a deficient number, since it is larger than the sum of its proper divisors (68301056385).

85464238455 is an equidigital number, since it uses as much as digits as its factorization.

85464238455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23447002 (or 23446987 counting only the distinct ones).

The product of its digits is 18432000, while the sum is 54.

The spelling of 85464238455 in words is "eighty-five billion, four hundred sixty-four million, two hundred thirty-eight thousand, four hundred fifty-five".