85454718669 has 12 divisors (see below), whose sum is σ = 130695452316. Its totient is φ = 53618646912.

The previous prime is 85454718653. The next prime is 85454718683. The reversal of 85454718669 is 96681745458.

85454718669 is a `hidden beast` number, since 8 + 5 + 4 + 547 + 1 + 86 + 6 + 9 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 53297263044 + 32157455625 = 230862^2 + 179325^2 .

It is not a de Polignac number, because 85454718669 - 2⁴ = 85454718653 is a prime.

It is a super-2 number, since 2×85454718669² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85454718469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 279263634 + ... + 279263939.

It is an arithmetic number, because the mean of its divisors is an integer number (10891287693).

Almost surely, 2^85454718669 is an apocalyptic number.

It is an amenable number.

85454718669 is a deficient number, since it is larger than the sum of its proper divisors (45240733647).

85454718669 is a wasteful number, since it uses less digits than its factorization.

85454718669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558527596 (or 558527593 counting only the distinct ones).

The product of its digits is 58060800, while the sum is 63.

The spelling of 85454718669 in words is "eighty-five billion, four hundred fifty-four million, seven hundred eighteen thousand, six hundred sixty-nine".